Trump grew up with three elder siblings – Maryanne, Fred Jr., and Elizabeth – and younger brother Robert.
Maryanne Barry (born 1937) is Donald Trump's eldest sister. She was a senior federal judge on the Third Circuit Court of Appeals, became inactive in 2017 after her brother took office, and retired in 2019.
Fred Trump Jr. (1938–1981) was Donald Trump's older brother. While attending Lehigh University, he joined a Jewish fraternity, Sigma Alpha Mu, even though he was not Jewish. After he graduated, he was unable to work with his father in his family business, so he flew planes for Trans World Airlines. In 1962 he married Linda Clapp and had two children with her, Fred and Mary, before their eventual divorce. In September 1981, at the age of 42, he died from a heart attack as a result of his alcoholism. His death caused Donald Trump to avoid alcohol and cigarettes.
Elizabeth Trump Grau (born 1942) is an older sister of Donald Trump. In 1989, she married film producer James Grau. She worked as an executive for Chase Manhattan Bank, before retiring to Florida.
Robert Trump (born 1948) is Donald Trump's younger brother. He is a retired business executive and real estate developer who managed the Trump Organization's real estate holdings outside Manhattan. He was married to Blaine Trump until their divorce in 2007. He serves on the board of directors for ZeniMax Media.