Warren Wilhelm Jr. was born in New York City in 1961. He received a B.A. from NYU and an M.A. in International Affairs from Columbia University. In 1987, he became a political organizer at the Quixote Center in Maryland. A year later, he traveled to Nicaragua to distribute food and medicine during the Revolution. Mr. Wilhelm was an ardent supporter of the Sandinista Movement and the National Liberation Front. He served as a fundraiser for the Sandinistas in New York. He considers himself a democratic socialist and he has espoused the tenets and policies of that party.

He married in 1994 and honeymooned in Cuba despite the U.S. travel ban. Mr. Wilhelm has been active in politics in New York. In 2001, Warren Wilhelm Jr. changed his name. To Bill de Blasio. . . . .