Custody Rights in Oklahoma Kinship families — or grandfamilies — are a growing trend in the United States. Families in crisis need help, and turning to grandparents to care for children is often a family’s first line of defense. This often includes having grandparents take guardianship of their grandchildren. Tulsa GRANDPARENTS RIGHTS Lawyer 500 W. 7th St., Suite 207 Tulsa, OK 74119 Phone: (918) 994-1600 Fax: (918) 932-2900