US poet Sylvia Plath tried to cut her own throat when she was 10 - two decades before she committed suicide, a new biography has claimed.
The revelation about Plath's troubled childhood has emerged on the eve of the 50th anniversary of her death.
The 'Mad Girl's Love Song,' by author Andrew Wilson also revealed that the troubled writer, who killed herself when she was 30, had also cut her face four years later, having battled depression following her father Otto's death when she was eight-years-old, the Daily Mail reported.
Wilson had access to previously unseen letters her mother Aurelia wrote to Palth's two children Frieda and Nicholas.
Wilson also saw an unpublished memoir by one of her former boyfriends, Gordon Lameyer, and interviewed a number of her pals, who had remained quiet until now.
They included Philip McCurdy, who told Wilson about Plath's attempt at slitting her own throat.
The letters from Aurelia, who died in 1994, were uncovered when Wilson found her neighbour Dorinda Cruickshank's home in Boston.
Many people have blamed her committing suicide at her home in north London on her husband and fellow poet Ted Hughes.
But Wilson explained that the death of Otto severely affected her many years earlier.
"I suppose you could say she had an Electra complex. She adored him, but then hated him when he left her by dying," he said.
In her poem 'Daddy,' she referred to her suicide attempt in 1953 and wrote "At twenty I tried to die And get back, back, back to you."
Plath, who was resentful of her poor background, also thought of her mother, with whom she shared a bedroom, as controlling. (ANI)