Table S1.

Sample details for three of Marco Polo’s family archival documents

Sample no.LibraryDateType of documentLocation of productionSpecies
VVK 26Biblioteca MarcianaAugust 5, 1280Testament of Marco Polo “il vecchio” (Marco Polo’s uncle)ItalySheep
VVK 29Biblioteca MarcianaAugust 31, 1300Testament of Matteo Polo (Marco Polo’s step-brother)ItalySheep
VVK 31Biblioteca MarcianaJanuary 9, 1324Testament of Marco Polo “il viaggiatore”ItalySheep