LONDON — A spokeswoman for Kate Winslet says the actress has given birth to a son and is “doing great.”

Publicist Laura Symons says Winslet had a boy, her third child, on Saturday at a hospital in southern England. She says mother and baby are both doing well.

The baby’s name has not been announced.

This is 38-year-old Winslet’s first child with husband Ned Rocknroll, whom she married last year. She has a daughter, Mia, and a son, Joe, from previous marriages to directors Jim Threapleton and Sam Mendes.

Rocknroll is the nephew of entrepreneur Richard Branson.