Hunter Davies, who penned the only official biography of The Beatles in 1968, has described Cynthia Lennon as "a lovely woman".
He said: "When I was writing the book I spent two years with them, visiting her home and spending time with her.
"She was totally different from John in that she was was quiet and reserved and calm.
"She was not a hippy at all."
He added: "I think it was the attraction of opposites between them. When they got together at art school everyone was amazed - she was seen as refined and reserved and nobody thought they would last.
"John treated her appallingly. He slept with Yoko in their marital home and, as we discovered later, he also physically attacked her but she was loyal to him."
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