Chinadog. Sorry to be so pessimistic, but there is no such definition in law as 'common-law-wife. There appear to be no 'Rights' in the event of a separation of unmarried persons living together. The only aspect which seems clear, is that the father of the children is required to financially support his children, either by agreement between the couple, or by application to the CSA. It looks like a nightmare for the young woman concerned in the separation. I wish young women would consider the implications of a separation before living with someone and having children. I know most take the arrangement on trust, but sadly trust can be betrayed, as can be seen by the situation here. At present there is no law which covers cohabitation, even when there are children involved. It is a very difficult position to be in for the girl to be in, and it's very sad when they have been together for so long. There are some legal people on this site, and I hope someone picks up your question who is able to give you some good advice about what the girl needs to do, to pass on to her.