Get a custody hearing from a court and see where they can take it from there. You must prove you are capable of looking after the child long term in a safe and nurturing environment. Get a good lawyer.
Mother's grandson as regards her daughter is either her (daughter's) son or her (daughter's) nephew.
Your grandson.
If your daughter-in-law's grandson is a child from a marriage before she married your son, or after their marriage ended, her grandson is not related to you. If he is a child of the marriage between your son and your daughter-in-law, then he is your great grandson.
your grandson.
aunt
Your grandmother's sister's daughter's grandson is your second cousin, once removed.
Your grandson.
Eminem has custody of his daughter and also his niece- his ex-wife's sister's daughter.
Your grandmother's grandson is you, your brother or your first cousin. So your grandmother's grandson's daughter is your daughter, your niece, or your first cousin, once removed. You are her mother or father, her aunt or uncle, or her first cousin, once removed.
Your daughter's son is your grandson and you are his grandma or grandpa.
Your great, great great grandson.
what are grandparents changes of getting grandson age when daughter is sleeping with father in law