Billy Bob Thornton's daughter has been found guilty of manslaughter.

Amanda Brumfield, who is estranged from the actor, was convicted of the aggravated manslaughter of her best friend's 12-month-old daughter, in Orlando last Friday (27.05.11).

The child, Olivia Madison Garcia, had died during a sleepover in 2008, but Brumfield denied charges of manslaughter, claiming the girl had fallen and hit her head while trying to climb out of a playpen and her death was an accident.

Her defence suggested The Fall might have aggravated a previous injury.

While she was acquitted of first-degree murder and aggravated child-abuse charges, the prosecution said it was "impossible" for a fall like the child suffered to cause a three-and-a-half inch fracture on the back of the girl's skull and the bleeding and swelling found in her brain.

Brumfield, 32, is the actor's eldest daughter, from his first marriage, to Melissa Parish. He has not thought to have been in contact with her for some time.

Billy Bob has been married five times in total and has fathered four children by three different women.

Brumfield will be sentenced in July.