Who changed her name to Rebecca Rolfe, after marrying John Rolfe?

Pocahontas (born Matoaka, known as Amonute, c. 1596–1617) was a Native American woman notable for her association with the colonial settlement at Jamestown, Virginia. Pocahontas was the daughter of Powhatan, the paramount chief of a network of tributary tribal nations in the Tsenacommacah, encompassing the Tidewater region of Virginia. In a well-known historical anecdote, she is said to have saved the life of a captive of the Native Americans, the Englishman John Smith, in 1607 by placing her head upon his own when her father raised his war club to execute him. Some historians have suggested that this story, as told by Smith, is untrue.

Pocahontas's Christian name, Rebecca, may have been a symbolic gesture to Rebecca of the Book of Genesis who, as the mother of Jacob and Esau, was the mother of two "nations", or distinct peoples. Pocahontas, as a Powhatan marrying an Englishman, may have been seen by herself and by her contemporaries as being also, potentially, the mother of two nations.

Pocahontas's feelings about Rolfe are unknown. They were married on April 5 1614 by chaplain Richard Buck, probably at Jamestown. For two years they lived at Rolfe's plantation, Varina Farms, across the James River from Henricus. Their son, Thomas, was born on January 30, 1615.