11:55 22 June 2009
Sir Michael Gambon has become a father again aged 68.
The actor, who plays Hogwarts headmaster Albus Dumbledore in the 'Harry Potter' films, had the child with 43-year-old set designer Philippa Hart.
This is the couple's second child who they have named William. Their first child, Michael, is two-years-old.
Sir Michael also has a 44-year-old son with his wife, Lady Anne.
A family friend told the Sun: "Philippa gave birth at a London hospital without complications and little Michael is a beautiful bouncing baby. It is a very strange set of circumstances worthy of a film script in itself.
"But Michael is open with his wife and she accepts the second relationship, though there have been rows in the past."
The actor lives with his wife of 45 years in Gravesend, Kent and visits Hart in South West London "a few times a week", the source added.
Sir Michael took over the role of Dumbledore in the third instalment of 'Harry Potter' from late actor Richard Harris.
The next film, 'Harry Potter and the Half Blood Prince', is out next month.