The abuse took place between the 70s and 80s.
Ralph Clarke, a 101-year-old man has been jailed for 13 years for committing 30 child sex offences.
Clarke, from Erdington in Birmingham is thought to be the oldest man convicted in British legal history, he was born in March 1915.
Judge Richard Bond said he had been guilty of “systematic abuse” between 1974 and 1983.
At the trial at Birmingham Crown Court he was found guilty of 21 counts of abusing two girls and Clarke admitted to nine charges relating to a boy.