William Brennans son did become a doctor, a surgeon apparently but later became a GP in Carnlough. He and his wife didnt have any children. He was acquainted with my grandmother who having split up with her husband before the birth of her second child, subsequently gave birth to a daughter but died 4 weeks later (of afterbirth complications). Dr Brennan and his wife wanted to adopt my mother...but only her, not her 3 year old sister and their aunt refused. He practised medicine until the late 1970's and remained in Carnlough until his death.