An Unknown European Dynasty: The Rise of Bourbon-Shi

This work presents an original genealogical and genetic analysis of a single maternal lineage traced through mitochondrial DNA (mtDNA), examining its continuity across sixteen historically documented European noble and royal dynasties. Using mtDNA-based lineage matching from MyTrueAncestry in combination with established genealogical and historical records, the study identifies sustained maternal-line continuity spanning Western, Central, and Eastern Europe.Rather than autosomal percentage-based ancestry, the research focuses on direct maternal inheritance, haplogroup continuity, and documented lineage convergence. Within historical tradition and early genealogical reconstruction, this maternal line is attributed to descent from Xi Shi (c. 650–600 BC), a legendary figure of ancient China whose lineage is referenced in later noble genealogical traditions linking East and West through elite marital networks. While direct biological verification at this depth is not possible, the attribution provides important historical context for the early transcontinental framing of the lineage.By the mid–7th century (circa 650 AD), the maternal line appears within the elite stratum of the Avar Khaganate, a ruling aristocracy that contributed significantly to the noble foundations of Central Europe. From this early medieval elite context, the lineage subsequently emerges within Hungarian high nobility, historically functioning as a bridge between Western European royal houses and Eastern imperial families.Across later centuries, this maternal line intersects with multiple dynastic houses, including branches associated with the House of Bourbon, noble families within the Habsburg dynastic sphere, and lineages historically connected to families later associated with the Romanov dynasty. The identification of sixteen dynastic intersections along a single maternal line, beginning with an early elite context, highlights the value of mtDNA analysis for long-term lineage reconstruction.This work does not assert modern royal status, succession claims, or legal titles. Its contribution lies in demonstrating how focused maternal-line genetic analysis, when paired with historical documentation and cautious interpretation, can illuminate deep genealogical continuity across multiple dynasties over more than a millennium. The broader genealogical research associated with this study has been formally acknowledged and archived by the Bodleian Library at the University of Oxford.DOI Notice:This work is assigned the same DOI (10.17613/8hdbh-mgj79) across multiple repositories, including Knowledge Commons and Zenodo, ensuring a single, stable scholarly identifier for citation, discovery, and long-term access regardless of platform.