Manning apparently reacted badly when the son changed his surname to Manning, too; she started taking running jumps at the walls, telling her mother: "I'm nobody now." In November 2001, Manning and her mother left the United States and moved to Haverfordwest, Wales, where her mother had family.
Manning attended the town's Tasker Milward secondary school.
A school friend there told Ed Caesar for The Sunday Times that Manning's personality was "unique, extremely unique.
Brian had joined the United States Navy in 1974, at the age of 19, and served for five years as an intelligence analyst.
Friends and neighbors considered the Mannings a troubled family.
In a 2011 interview Manning's father said, "People need to understand that he's a young man that had a happy life growing up." He also said that Manning excelled at the saxophone, science, and computers, and created a website at the age of 10.
Assigned in 2009 to an Army unit in Iraq as an intelligence analyst, Manning had access to classified databases.
In early 2010, she leaked classified information to Wiki Leaks and confided this to Adrian Lamo, an online acquaintance.