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Donald Trump Jr.
Donald Trump Jr. is the first child of Donald Trump and is a businessman, like his father. He works with both sister Ivanka and brother Eric as Executive Vice President at The Trump Organization. Like several of his family members, "Don" attended the University of Pennsylvania and went on to be a success. He met and then married model Vanessa Haydon in 2005, with the marriage being officiated by Donald Jr.'s aunt. With his wife, he has five children - two daughters and three sons. (Getty)