Maureen Elizabeth Reagan was an American political activist and the first child of U.S. President Ronald Reagan and his first wife, Jane Wyman. She pursued a career in acting and politics, becoming a prominent figure in the Republican Party. Reagan was a passionate advocate for Alzheimer's disease awareness after her father's diagnosis, serving on the board of the Alzheimer's Association. She passed away from melanoma in 2001, leaving a legacy of public service and advocacy.