Sir William O'Brien: key obituary facts
Is Sir William O'Brien dead? Yes. Sir William O'Brien died on February 19, 2016, at age 99.
Cause of death: Sir William O'Brien's cause of death has not been publicly confirmed.
What was Sir William O'Brien known for?
Sir William O'Brien was a British admiral.
British admiral
Died on Friday February 19th 2016