2022-06-22 00:00:00 What do you call your mother's father's sister's son's sister's daughter's spouse? Follow the chain of familial relationship links in How Are We Related to find out more about your great-great-grandaunts, third cousins, and in-laws! Disclaimer: this app currently only features relationship terms used in the traditional Western family structure and may be expanded in future to provide better support for family structures comprising single parents, same-sex marriages, remarriages, and adoptions. Thank you for your understanding.