L2 EC - family relationships using possessive s

My brother / son / name / is Raul.

My mother / mother / name / is Marina.

My mother / father / name / is Arturo.

My father / mother / name / is Guadalupe.

My father / father / name / is Santiago.

My sister / son / name / is Ricardo.

My sister / daughter / name / is Pamela.

Rewrite with possessive - The brother of my mother is my uncle Julio.

Rewrite with possessive - The sister of my father is my aunt Gladys.

Rewrite with possessive - The father of the mother of my dad is my great-grandpa Rufino.