many beatles fans blamed ono for "breaking up" the band through her influence on lennon. he seemed to many people to have "gone crazy" since meeting her. some suggest that ono simply encouraged lennon to do things he'd already wanted to do, but let himself be talked out of doing in the past – including quitting the beatles. ono and lennon started a new, part-time group they called the plastic ono band. they also tried to have a baby together. ono miscarried several times, until their son sean lennon was born in 1975, on lennon's 35th birthday. ono was also able to with her family, during the 1970s.