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DH has never known his Dad. His Mum had him and his two older sisters with the same man but left him when DH was 6 months old. She left London and started a new life for herself and never had any contact with him again.
DH would like to know a bit more about him and whether he has any other brothers and sisters but we really don't know where to start. We know his name, what he worked as and where he was from but that is about it.
It is possible he is deceased as he was in his late 40's when DH was born and he is now 38.