But he had stopped taking antidepressants seven months before he leapt from a fourth-floor balcony with son Liam and daughter Mia in August 2006.
At a previous court hearing, Hogan said he might have been driven to the incident because his “mental functions” were unhinged.
He said he was “mentally disorientated” when the tragedy occurred.
A statement from Hogan, handed to Greek judges by Mr Xiritakis in 2006, said: “I have suffered from a mental illness for many years, perhaps from birth.
“My brothers, Stephen and Paul, committed suicide because of serious personality disorders.
“My dad, John, died following a long battle with MS. My father’s illness had changed our house into a little hospital, where despair and grief ruled.
“The death of my brother, Stephen, who I was very close to because we were a similar age, shocked me very much.”
His older brother, Paul, had been a manic depressive who had been sectioned in a mental hospital. In 2004, after setting fire to the home, he committed suicide by jumping from the Clifton Suspension Bridge in Bristol.