Matthew Paige Damon was born on October 8, 1970 (age 51 years), in Cambridge, Massachusetts, United States.
Matt Damon is an American actor, film producer, and screenwriter. He is ranked among Forbes’ most bankable stars, and the films in which he has appeared have collectively earned over $3.88 billion at the North American box office, making him one of the highest-grossing actors of all time.
Damon began his acting career by appearing in high school theater productions. He made his professional acting debut in the film Mystic Pizza (1988).
Matt Damon children: Isabella Damon, Alexia Barroso, Stella Damon, Gia Zavala Damon
Matt Damon has three biological children with his wife Luciana Barroso. He also fathers the daughter of his wife whom she had from a previous relationship.
His children have been identified as Isabella Damon, Alexia Barroso, Stella Damon, and Gia Zavala Damon.
Alexia Barroso on the other hand happens to be his stepdaughter whom he considers to be his own.
Source: celebfaqs.com