daughters boyfriend has sued for custody of 2yr old granddaughter, granted not father, how is this legal?

Either you do not know the full story or you have not told us the full story. Your daughter would have to be declared an unfit mother for anyone to get custody. Did she fight these charges? The judge would not give custody to a man who was not the father. Where were you when the court proceedings were going on? Are you sure your daughter didn't just sign over custody to him?

If this man has been taking care of the child physically, emotionally and financially since birth and this man is not denying that he is the father then he would be given custody if the mother is unfit. He obviously can take better care of the child. Also if no other family member has tried to object to this he is probably the only other person in this childs life that that the courts feel wants to care for the child, in the ocurts eyes this is much better than giving the child to a total stranger.

Something is missing in your story, or what you know about the case. If there has been no acknowledgement of his being the father (by your daughter or tests) then they would not just give custody to him. Also, what is going on in your daughters life that they gave HIM full custody??

Depends on state law. In some places an 'acknowledgement' of paternity is legally binding.

Richard

Your daughter must be living a lifestyle that isnt suitable for a child. Otherwise I cant understand why a judge would do that. Never heard that before

Im in the legal field and there is obviously more to this story UNLESS the Mother is a complete idiot.

It all depends on where she lives.In the U.S the court decides "The best interest of the child". Who can support the baby, who has a bond with the child, who's mentally capable. etc..

Then I don't see how he could win.