<Tr> <Th> Occupation </Th> <Td> Attending cardiothoracic surgeon at Grey Sloan Memorial Hospital </Td> </Tr> <Tr> <Th> Title </Th> <Td> Chief of Cardiothoracic Surgery M.D. F.A.C.S. </Td> </Tr> <Tr> <Th> Family </Th> <Td> Diane Pierce (adoptive mother, deceased) Bill Pierce (adoptive father) Ellis Grey (biological mother, deceased) Richard Webber (biological father) Meredith Grey (maternal half - sister) </Td> </Tr> <Tr> <Th> Significant other (s) </Th> <Td> Dean (ex-fiancé) Ethan Boyd Andrew DeLuca Jackson Avery </Td> </Tr>

When does maggie find out richard is her dad