Sarah was the wife of Abraham (Avraham) and the first Matriarch (Imahot) of the Jewish People. 

Her name was originally Sarai, but was changed to Sarah when Abraham accepted circumcision. Sarah accompanied Abraham on his journeys (from Mesopotamia to Haran to Canaan), and helped him teach about the One God. 

She was childless for many years. She gave her handmaiden Hagar to Abraham so he could have children, and Hagar bore Ishmael. At the age of ninety, Sarah was told she would give birth and she laughed because she thought she was too old to have children. Sarah gave birth to Isaac (Yitzhak). Later Sarah drove Hagar and Ishmael away, saying "the son of this hand-maiden will not inherit together with my son, Yitzchak." (Bereshit 21:10)

Abraham bought the Cave of Machpelah for a family grave, and Sarah was buried there.