Hi, Rosa was my great grandmother. Her mother had a shop in Tiger bay, she died of blood poisoning. Thomas her father we don't know what happened, her brother told her that he was killed at sea on HMS Tiger, but I have not found his name amongst the casualties. I believe this was a made up story. Her stepfather was a very kind man Rosa said. He wanted her to live with him after her mothers death, but the mothers familly wanted the children with them, a were taken in, Frank the oldest brother wanted Rosa with him, and contributed towards her keep.
I will post more If I can help you further