Sarah.
Sarah is the grandmother of Jacob, Sarah is the mother of Jacobs father "Isaac" and she is the wife of our Father Abraham who is the father of Isaac. Jacob's mothers name was "Rebekah".
Jacob's mother's name is Rebekah. She was married to Isaac, making her the daughter-in-law of Abraham and the mother of Jacob and Esau.
jacob's mother's name is Sarah Black, but she died
The books don't really touch on this topic, but it does say that she died a long time ago. Her name was Sarah.
She died in a car accident. Jake says so in Breaking Dawn
Jacob Black's mom died in a car accident when he was nine years old.
His name is Billy Black.
Sarah Black
Sarah Black
Rachael and Leah
Jaye Jacobs's birth name is Emma Jacobs.
Billy Jacobs's birth name is Paul Jacobs.
Al Jacobs's birth name is Albert T. Jacobs.
Catherine Jacobs's birth name is Catherine Renee Jacobs.
Devery Jacobs's birth name is Kawennhere Devery Jacobs.
Glenn Jacobs's birth name is Glenn Thomas Jacobs.
Jessie Jacobs's birth name is Jessica Madison Jacobs.
Klaus Jacobs's birth name is Klaus J. Jacobs.
Seaman Jacobs's birth name is Seaman Block Jacobs.
Sarah Black I cant find it in the books... but im Team Edward .. so i didnt try to hard :P
Sunny Jacobs's birth name is Sonia Jacobs.