


New Study Reveals Genetic Profile of 10 Spanish Jews Killed in 1348 Pogrom
https://pmc.ncbi.nlm.nih.gov/articles/PMC13026783/
The Black Death pandemic, combined with the antisemitic climate of 14th-century Europe, led to widespread violence against Jewish communities, including pogroms such as the one in 1348 in Tàrrega (Catalonia, Spain). In the Roquetes necropolis of Tàrrega, six communal graves containing at least sixty-nine individuals, with signs of violence, were dated to the mid-14th century.
It was determined that this was a non-familial mass burial event: no first- or second-degree genetic kinship was found among analyzed individuals, and a significant fraction of the broader burial assemblage exhibits perimortem cranial trauma, indicating significant physical violence they endured prior to death.
The Roquetes individuals show high mitochondrial diversity (haplogroups H, J, K, L, M, R, U), contrasting with the narrow mtDNA spectra documented in medieval Ashkenazi communities at Erfurt (Germany), where strong founder effects and drift operated [20], and at Norwich, where elevated levels of consanguinity could also have influenced the genetic drift [21].
Among the four male victims, the study detected J2 (J2a2a1~*), E (E-CTS9507; E-Y231455), and G (G-PH1944/FT19393) haplogroups. These lineages have deep Neolithic–Bronze Age roots in the Eastern Mediterranean/Levant and adjacent regions and are frequent in Jewish diaspora groups [19,66,77,78]. The recurrence of E1b1b-lineages in medieval Jewish cemeteries (Erfurt, Norwich) and the presence of J and G among present-day Jewish groups further underscore continuity from Levantine–Mediterranean ancestry sources [20,21,78,79,80].
qpAdm identifies two-way models that fit the Roquetes population as a mixture of Canaan (labeled as Israel Middle/Late Bronze Age) and non-Jewish non-Islamic medieval Iberian populations (p = 0.158), with point estimates around ~0.69 for Levantine ancestry and ~0.31 for Iberian medieval ancestry. Among one-way models, only the Erfurt subgroup with Middle Eastern affinity is marginally plausible (p = 0.098), consistent with a Levantine-centered core plus Iberian admixture. Together, these results indicate that the Roquetes victims preserved a distinctively Jewish genetic signature while incorporating local Iberian ancestry.