Jan Herman van Roijen Jr.

Jan Herman van Roijen (10 April 1905 – 16 March 1991) was a Dutch diplomat and politician. He was Dutch foreign minister in 1946. Early life Van Roijen was born in Constantinople on 10 April 1905. He was the son of Jan Herman van Roijen Sr (1871–1933) and the American-born Albertina Taylor Winthrop (1871–1934), who married in May 1904. When he was born, his father was a diplomat in Constantinople. His maternal grandparents were banker Robert Winthrop and the former Kate Wilson Taylor (a daughter of Moses Taylor, a prominent railroad financier who served as president of National City Bank). Among his maternal family was uncle Beekman Winthrop, the Assistant Secretary of the Navy in the Taft Administration, and aunt Katharine Taylor Winthrop, the wife of U.S. Senator Hamilton Fish Kean. He received a Ph.D. from the University of Utrecht.