Mary DE CLITHEROE 
Mary DE was born about 1372 in Wimpole, Cambridgeshire, England. Mary DE's father was Hugh DE CLITHEROE and her mother was Isabel DE GRAS. Her paternal grandparents were Robert DE CLITHEROW and Sibyl DE HOGHTON; her maternal grandparents were John DE GRAS and Pauline UNKNOWN. She was an only child.
They had a daughter named Elizabeth.