I have a birth certificate for a Margaret Jane Costello, but it is the wrong one(wrong father). I suspect there may be a family link though as this MJC was born a few months after my MJCs sister (julia ann), in the same area of Salford, possibly only a few streets apart. Either that or it is a huge coincidence. Anyway thanks to a 1861 census entry supplied after my posting, I now know that they are 2 separate MJCs and not the same person who for some reason was 'adopted' or looked after by a relative as a young child.
If anyone knows of a family link between a William Costello(born Ireland apparently) with wife Sarah (cunningham)and a Thomas Costello (born either Gibralter or Ireland) with wife Catherine (Flanaghan?), and born around 1820, with close links with Salford in the 1950s, I would be greatly appreciative of any information.
many thanks MM