The House of Aisin Gioro is the imperial family of the last dynasty in Chinese history—Qing dynasty (1644–1911). The Aisin Gioro family originated from Jurchen tribes and founded the Manchu people before they conquered China. By investigating the Y chromosomal short tandem repeats (STRs) of seven modern male individuals who claim to belong to the Aisin Gioro family (three of which have full records of pedigree), we found that three of them (two of which having full pedigree, whose most recent common ancestor is Nurgaci) showed very close relationship (1–2 steps of differences in 17 STRs) and possessed a rare haplotype. We therefore conclude that this haplotype is the Y chromosome of the House of Aisin Gioro. Further tests of single-nucleotide polymorphisms indicate that they belong to haplogroup C3b2b1*-M401(xF5483), although their Y-STR results indicate that they are not a part of the ‘star cluster’ (once linked to Genghis Khan), which belongs to the same haplogroup. This study forms the base for the pedigree research of the imperial family of Qing dynasty by means of genetics.
The non-recombining region of male-specific Y chromosome is strictly passed on from father to son. Random mutations may occur during its inheritance, thereby allowing the reconstruction of paternal phylogeny through comparison of the sequence of males’ Y chromosomes. The males sharing closer common ancestor have more similar sequences, and vice versa. Commonly used markers for tracing Y chromosomal phylogeny include single-nucleotide polymorphisms (SNPs) and short tandem repeats (STRs). The upstream SNPs can be used for tracing relatively old (usually more than thousands of years) clades. On the other hand, using high-throughput sequencing of long regions of Y chromosome, we can discover rare and recent mutations, and calculate the divergence time with a theoretical highest precision of ~100 years, that is, 3–4 generations.1 The mutation rate of STRs is higher and STR recurrent mutations occur frequently, therefore relatively recent relationships can be traced by comparing STRs.2
As both surname inheritance and genealogical records in most East Asian populations follow the paternal lineage, we can verify the precision of genealogy records using Y chromosomal data. In the following cases, different types of Y chromosomes occur in one paternal family: illegitimate son, adoption from another family and when a son inherited his mother’s surname. Adoption from inside a paternal family usually cannot be recognized through analysis of Y chromosome. Also, it commonly happens that a family traces their genealogy to an unrelated family with the same surname, to enhance their own prestige.
Owing to the uncertainty of father-son relationship, technically, the Y chromosomal result of a man shows only the haplotype of himself rather than that of his whole paternal family. However, corresponding results of two modern individuals that were supposed as related would verify the lineages from their most recent common ancestor to both the individuals, and more tested results would make the conclusion more reliable.
Currently, the only reported Y chromosome result of historical Chinese imperial houses is that of Cáo Wèi dynasty (220–265 AD), belonging to the haplogroup O2*-M268. This conclusion was first achieved via comparison and statistics of the Y chromosomes of descendants recorded in the genealogy books, then verified using the DNA extracted from the remains of Cáo Dng (), Cáo Cào ()’s grandfather’s brother.3, 4 The Y chromosomal type of Genghis Khan was once supposed to belong to the ‘star cluster’ under C3*-M217(xM48),5 however, this was only deduced based on the Mongolian STR cluster with high frequency without genealogical support, and is still under debate.6
The House of Aisin Gioro (, all the Manchurian names in this article apply to the Latin transcription invented by von Möllendorff7) originated from Jurchen tribes, and consolidated Jurchen and Mongolian tribes as well as surrounding Han Chinese into the Manju (commonly Manchu) people, and finally founded the last imperial dynasty of China—the Qing dynasty (1644–1911). Only one study has speculated the Y chromosomal type of the House of Aisin Gioro: Xue et al.8 revealed an STR cluster under haplogroup C3c-M48, which includes ~3.3% of males in some populations of Northeast China as well as in Mongolians. They named it as the ‘Manchu cluster’, and calculated its divergence time at 590±340 years. The authors claimed that due to its recency, the expansion of this lineage should be an event recorded in history. Because of its large and widespread population, the only explanation for this cluster should be that it were the Y chromosome of Aisin Gioro, with the most recent common ancestor being Giocangga (), the grandfather of Nurgaci (, commonly Nurhaci, 1559–1626, the first emperor of Later Jīn () dynasty). However, the authors did not provide any genealogical evidences in support of this interpretation. In addition, the figure in this report showed that the ‘Manchu cluster’ occurred at clearly higher frequency in Oroqen, Ewenki, Hezhe and Inner and Outer Mongolians than in Manchu and Sibe (the closest ethnic group to Manchu that separated from Manchu in early Qing dynasty). Therefore, the conclusion of this study need to be verified by further genealogical studies.
In Manchurian language, the term ‘hala’ () is the surname of people who are said to have the same paternal common ancestor, although it was also suggested that people from one hala only belonged to the same tribe rather than having the same paternal origin.9 The Gioro hala () includes sub-surnames like Aisin Gioro, Irgen Gioro (), Šušu Gioro () and so on, with ‘aisin’ meaning ‘gold’ in Manchurian. Aisin Gioro includes the people with the same traceable ancestor with Nurgaci, that is the descendants of his great-grandfather Fuman (). Since 1636, the descendants of Taksi (, father of Nurgaci) were nominated as ‘uksun’ (, ‘the imperial house’), whereas the peripheral members in Aisin Gioro were called ‘gioro’ (), which has a different definition from Gioro hala. After Manchu’s conquest of the entirety of China, the descendants of Kangxi Emperor (great-grandson of Nurgaci and son of Fulin, 1654–1722) were called ‘near uksun’ (), whereas the other uksun were called ‘far uksun’ ().
In a statistics in 1915, there were 27 884 males of Aisin Gioro alive, including 16 454 uksun and 11 430 gioro.10 Considering natural population growth, as well as wars, political events and the policy of family planning in the recent 100 years, the currently estimated number of Aisin Gioro males is <30 000. Owing to a decree in the Qing dynasty that uksun were forbidden to leave the capitals—Beijing and Mukden (present Shenyang), great number of present Aisin Gioro still live in these two cities.
To understand the origin of Aisin Gioro family, their current state, as well as to review some historical rumors about the family, we investigated Aisin Gioro’s Y chromosome by testing SNPs and STRs.
Materials and methods
We collected blood or oral samples from seven males whose families lived for generations in Beijing or Liaoning, who all claimed to belong to the House of Aisin Gioro but separated from each other more than five generations ago. The study was under the approval of the Ethics Committee of Biological Research at Fudan University, and all the samples were collected with the informed consent. Among the seven males, three have complete genealogical records inside the book of ‘Genealogy of Aisin Gioro’,11 whereas the others could only offer partial ancestral information. All the three with full lineage were ‘far uksun’, and their family lived in Beijing for generations, with two of them (samples A and D) being descendants of Dodo (, the 15th son of Nurgaci), and the other (sample B) from the House of Prince of Sù (), descendant of Hooge (, the first son of the second Qing Emperor Hung Taiji ). In addition, one testee from Beijing (sample E) claimed to be from the family of Prince of Zhèng (, descendant of Jirgalang (, nephew of Nurgaci)). A further testee (sample C) from Beijing claimed to be a descendant of ‘gioro Langkio’ (), who is possibly the great-grandson of Soocangga (, the third son of Fuman). The other two testees are from Liaoning Province, one from Jinzhou () (sample F) also claimed to be a descendant of Dodo, and the other (sample G, without knowing his ancestors’ names) from Benxi (). To avoid troubles or loss of reputations of the testees and their close relatives, we do not reveal the testees’ names or the information of their near ancestry.
We extracted the DNA of all these samples and amplified 17 Y-STRs (DYS19, DYS389I/II, DYS390, DYS391, DYS392, DYS393, DYS437, DYS438, DYS439, DYS448, DYS456, DYS458, DYS635, Y-GATA H4 and DYS385a/b) using Y-Filer kit (Life Technologies, CA, USA). For those samples that 17 STRs fell into the range of haplogroup C, we genotyped seven SNPs using Sanger sequencing—M217, F1396, F3535, F3273, F5483/SK1074, M546 and M401—to determine their fine phylogeny (see Table 1). STR network of C3 samples from this study and compared samples (see Results) were drawn using Network 18.104.22.168 (Fluxus, Suffolk, UK) with median joining algorithm.12
Among the 17 STR results of all the seven testees, three (A—a descendant of Dodo, B—a descendant of Hooge and C—a descendant of Langkio by oral history, see Figure 1) showed similar results, having STR haplotypes with only 1–2 steps of mutations among each other (Table 2 and Figure 2), whereas the others had at least six steps to them and among each other, which excludes the possibility that they share a common ancestor inside 500 years. By searching published literatures, we found two nearest samples that have two steps of difference with sample A—one is a Manchu from Xinbin () County of Liaoning Province (Ht188),13 the other is from northeastern part of Mongolia (MG3_5).14 We also searched the largest Y-STR data set—http://www.ysearch.org, but could not find any samples as close as two steps.
The phylogeny of these samples were tested for seven SNPs (Table 1 and Figure 3), among which M217 (haplogroup C3) was well known in numerous literatures;14, 15, 16 F1396, F3535 and F3273/M504 were discovered from high-throughput sequencing of Y chromosomes of Mongolian and Manchu samples;17 M401 and M546 were found in Mongolian and many related populations, especially the ‘star cluster’, which was suspected to be the clan of Genghis Khan, which also belongs to the clade C3b2b1-M401;14 and F5483/SK1074 was discovered from Orochon and Daur samples.18 The samples A, B and C were genotyped as belonging to haplogroup C3b2b1*-M401(xF5483), the same as the ‘star cluster’, despite 10 steps of difference in 17 STRs between sample B and the central value of the ‘star cluster’ (Table 2).
Although there is large confidence interval for the divergence time estimated using Y-STRs and ongoing debate about the STR mutation rate (from the ‘effective mutation rate’ of 6.9 × 10−4 in 25 years, that is, one mutation per 36 231 years,19 to the father-to-son mutation rate of 3 × 10−3 per generation,20 that is, one mutation per 10 000 years), the calculated age can give a rough image about the divergence time. Using the software network with a medium mutation rate of one mutation in 20 000 years for 15 STRs with exceptions of DYS385a/b (as DYS385 loci may be converted from each other and cause complexity in time estimation21), we estimated the most recent ancestor of A, B and C as 666±471 years before present. This time is in accordance with the genealogy (Fuman as the most recent common ancestor, ~500 years before present). Adding the Xinbin Manchu sample Ht188, the calculated divergence time became 1333±653, which is much older than Aisin Gioro’s time depth. Therefore, we suggest that the Y-STR combination of the three samples represent that of Aisin Gioro family.
This Y-STR haplotype is rare in modern populations, including Han, Manchu and Mongol, and we found the samples nearer than two steps to sample B are only from Aisin Gioro family, therefore a member in question with less than two steps to this haplotype has a great chance that he really belongs to Aisin Gioro. Xinbin County in Liaoning is the location of Hetu Ala () city where Nurgaci arose, and there can be certain amount of Aisin Gioro’s relatives (with divergence time of 500 to 1000 years). However, we found only one sample (Ht188) in 231 published Manchu samples from Xinbin that have two steps of STR difference to sample A, which means that the Aisin Gioro family is not frequent in a normal Manchu population. However, we still expect to find more individuals with this haplotype from Manchu in Beijing and Shenyang. This study also shows that, among those who claim to be Aisin Gioro without a clear genealogy, the chance that one really belongs to this lineage (in biological sense) is not high. In contrast to the conjecture that Aisin Gioro belongs to C3b2a-M48 ‘Manchu cluster’ based on frequency data, this study showed that the common imagination that a powerful emperor or king’s descendants should comprise a great proportion of a population can be improper.
Understanding of Y chromosomal type of Aisin Gioro will benefit historical research on Jurchen, Manchu and the Qing dynasty, and will help to confirm or disprove some rumors of genealogical relationships. For example, some scholars inside Aisin Gioro claim that the Gioro hala were descendants of the Huī Zōng Emperor of Sòng dynasty (, 1082–1135), who was captured by the Jurchen Jīn dynasty and exiled to Northeast China.9 There is also a rumor that the Qianlong Emperor was not the biological son of the Yongzheng Emperor (son of Kangxi Emperor). Although no descendants of Qianlong were included in this study, this rumor can be easily examined in the future.
It should be noted that during the Chinese history, the father-son relationship in social law is not equal to that in biological sense. Many adoption events owing to sonlessness were recorded in the genealogy of Aisin Gioro; most of the adoption events occurred between closely related clans, although adoption from other surnames also happened. Therefore, it is not proper to judge social family heredity simply using the biological evidence.
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We are grateful for the trust of the sample donors. This research is supported by the grants from the National Science Foundation of China (31271338), and from Ministry of Education (311016).
The authors declare no conflict of interest.
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Yan, S., Tachibana, H., Wei, L. et al. Y chromosome of Aisin Gioro, the imperial house of the Qing dynasty. J Hum Genet 60, 295–298 (2015). https://doi.org/10.1038/jhg.2015.28
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