In the episode "Quagmire's Baby", he discovers that he has a daughter, Anna Lee, but puts her up for adoption; several episodes imply that Quagmire has fathered several other children. His father, Dan, is introduced in the episode "Quagmire's Dad"; he is a naval veteran of the Vietnam War who has a sex reassignment and becomes a woman named Ida. Quagmire's sister, Brenda, is first seen in the episode "Jerome is the New Black" and is the subject of "Screams of Silence: The Story of Brenda Q".