In 1844, Ross married a free black named John Tubman and took his last name. She also changed her first name, taking her mother's name, Harriet. In 1849, worried that she and the other slaves on the plantation were going to be sold, Tubman decided to run away. Her husband refused to go with her, so she set out with her two brothers, and followed the North Star in the sky to guide her north to freedom. Her brothers became frightened and turned back, but she continued on and reached Philadelphia. There she found work as a household servant and saved her money so she could return to help others escape.