I have done all that and it doesn't work. I have three unkowns that seem to be tied together. The oldest ate the end of the string dio not have edit buttons the third does but since one of the unknown is shown as her mother it will not delete her either.
Thank you :) I did that. Just realised that if I wanted to delete the entire branch off my mum's side I had to start from the first generation and work my way down.