Cousin of actor Joseph Baldwin.

No relation to actor Adam Baldwin.

Son-in-law of John Phillips, and Michelle Phillips. Half-brother-in-law of Bijou Phillips, and Mackenzie Phillips.

William and his older brother Alec were both very close friends of the late John F. Kennedy Jr.

Wanted to name one of his sons Gehrig after New York Yankees legend Lou Gehrig.

Brother of Alec Baldwin, Daniel Baldwin, Stephen Baldwin, Jane Sasso, and Elizabeth Keuchler.

William worked as an aide on Capitol Hill for U.S. Representive Thomas J. Downey ( New York/ Democrat).

Both William and younger brother Stephen are former Calvin Klein Models.

Attended the State University of New York at Binghamton for 2 years before leaving to go to Hollywood

The Creative Coalition ( TCC ) elected William its their new president.

Acccording to most biographies on the Baldwin Brothers, William and his brothers Alec, Stephen, and Daniel attended Massapequa High School, but they actually went to Alfred G. Berner High School, two miles from Massapequa High School. But their father, Alexander Jr., was a highly respected history teacher and football coach at Massapequa High. In 1998/1999 he was honored by the school, and the auditorium was renamed for him.

Baldwin and pop singer Chynna Phillips gave birth to 7 lb., 2 oz. daughter, Jamison Leon. [27 February 2000]

Studied political science at university.

Son, Vance Alexander, born October 23, 2001 in New York City.

His son Vance was born on the same day and month (October 23rd) as his niece, Ireland.

Son of Carol M. Baldwin

Before becoming an actor, he worked as a male model.

Four years after they got together, William and Chynna were married on September 9th, 1995 at the Sacred Hearts of Jesus and Mary Roman Catholic Church in South Hampton, New York.

Has a dog named Thurman, named after New York Yankees great Thurman Munson.

William likes jazz, the Count Basie Band (swing), and Van Morrison, but has no favorite genre of music.

William, who trained for three weeks at the Chicago Fire Academy, rode along with the Chicago Fire Department's Squad 5 while preparing for his role as Brian McCaffrey in Backdraft (1991).

Rode along with the Chicago Fire Dept.'s Squad 5 in preparation for his role in Backdraft (1991).

Daughter Brooke Michelle born to his wife Chynna Phillips in New York on December 6 2004 weighing 7 pounds, 6 ounces.

Ex-brother-in-law of Kim Basinger.

Like his brother Alec, William is a vegetarian and was once nominated for PETA's "Sexiest Vegetarian".

William and his brothers were all wrestlers in high school, and he even wrestled in college. Aside from being a wrestler in high school, William also played on both the high school football and baseball team.

A former wrestler, he was inducted in the Amateur Wrestling Hall of Fame after receiving the 2003 Outstanding American Award. Past recipients included Sen. Paul Wellstone, Dan Dierdorf, astronaut Michael Collins, actor Kirk Douglas, writer John Irving, Donald Rumsfeld, Gen Norman Schwarzkopf and many former Presidents.