《金史·列传·卷二十》
先祖萧挞不也，在辽国做官为枢密使，守司徒，封为兰陵郡王。
祖挞不也，仕辽为枢密使，守司徒，封兰陵郡王。
His ancestor, Xiao Tabuye, was an official in the Liao Dynasty as the Privy Envoy, guarding Situ, and was enfeoffed as the King of Lanling County.