Want this question answered?
Both "Father Christmas" and "St. Nicholas."
you call god father and mother tresa is a saint
You can call her by her first name or if your comfortable some son-in-laws call them mom.
Grandmother
grandfather
She is your Grandmother.
mother/father in law
Your half-sister's mother may be your mother, if you have different fathers. If you have different mothers and your father is married to your half-sister's mother, then you probably should call her "mother." If your half-sister's mother is not connected to your father (i.e. her father married your mother) then there is no relationship name for you to call her mother, other than "my half-sister's mother."
Grandmother in English. English does not distinguish between the Mother's mother and the Father's mother, they are both called Grandmother.
Your mother's father's uncle is your mother's great uncle and your great great uncle.
Maternal Grandfather
your mothers mother is called your grandmother. and your mothers father is called your grandfather.