Frank Sinatra's widow Barbara dies aged 90
Barbara Sinatra, the fourth wife of singer Frank Sinatra, has died aged 90.
Sinatra died of natural causes at her home in Rancho Mirage, California, surrounded by family and friends, said John Thoresen, director of the Barbara Sinatra Children's Centre.
With her husband's help, Barbara Sinatra founded the non-profit centre in 1986 to provide therapy and other support to young victims of physical, sexual and emotional abuse.
In the years since, Mr Thoresen said, more than 20,000 children have been treated at the centre in the desert city of Rancho Mirage and hundreds of thousands more throughout the world through videos it provides.
A former model and Las Vegas showgirl, Sinatra was a prominent Palm Springs socialite in her own right before she married her husband in 1976 when he was 60 and she 49.
They remained wed until his death in 1998 aged 82.
She met the singer through her previous husband, Zeppo Marx of the famous Marx Brothers comedy team.
Marx and Frank Sinatra had been close friends and neighbours in Rancho Mirage until she left Marx.
It was her third marriage, Sinatra's fourth and the most enduring union for both.
Frank Sinatra had previously been married to Nancy Sinatra, mother of their children Nancy and Frank Jr, as well as actresses Ava Gardner, who died in 1990, and Mia Farrow.
Over the years, Frank and Barbara Sinatra played an active role in the children's centre.
"Frank would come over and sit and read to the kids," Mr Thoresen said of the sometimes volatile entertainer.
"But the best way she used Frank," he added with a chuckle, "was she would say, 'I need a half-million dollars for this, so you do a concert and I get half the money'."
She remained active at the centre until recently, pushing for creation of the video programme just last year and making sure the children had anything they needed, Mr Thoresen said.