Whoa!! These are your children we are talking about. Any girlfriend past/present/future would have no legal right (let alone morals) to exhume bodies that she was not related to in any manner.
not without his permission, and in states that allow lesbian couple adoptions
No
What can a father do if the mother of. His children took the kids and moved to another state without permission.
no
Generally, no, not without her parents' permission. She is a minor.
no
can the grand mom and her son take a life insurance policy out on me and his children without my {legal wife} permission
no
Not without permission of the court.
No one can write a check on any checking account that does not have them as a signer. If their name is not on the account it is called fraud. If their name is on the account a check can be written without permission, even if you are the main signer
If they do not have custody of the children, they cannot. If they have custody, they can apply to a court for a name change.
Not without the parent's permission.