 Xin Xianying had a younger brother, Xin Chang (辛敞), who also served as an official in Wei.Xin Xianying married Yang Dan (羊耽), the youngest son of the Eastern Han dynasty official Yang Xu (羊續).Yang Dan, who was from Taishan Commandery (泰山郡; around present-day Tai'an, Shandong), served as the Minister of Ceremonies (太常) in the Wei central government.