Patti Davis (born Patricia Ann Reagan on October 21, 1952) is the daughter of Ronald Reagan and Nancy Davis. She is the older sister of Ron Reagan, and half-sister of Michael Reagan and Maureen Reagan. Known as the black sheep of the Reagan children, she had a highly-publicized rift between her and her father, something she patched up closer to her father's death.

She wrote a song for The Eagles in the 1970s entitled "I Wish You Peace".

She is known for her pro-choice viewpoint, and a feud that lasted a long time with her mother. She divorced Paul Grilley in 1990. 

Credit: patti-davis.biography.ms