Elizabeth married her first husband, Sir Humphrey Bourchier, the son and heir of John Bourchier, 1st Baron Berners, and his wife Margery, in about 1466. The marriage produced a son, John Bourchier, 2nd Baron Berners and two daughters. Following her marriage, Elizabeth went to court where she served as lady-in-waiting to Queen Elizabeth Woodville, whose train she had carried at the latter's coronation in May 1465 at Westminster Abbey. Elizabeth accompanied the Queen and her children into sanctuary at Westminster Abbey when King Edward IV had been ousted from the throne, and was present at the birth of the future King Edward V. She remained with the Queen until Edward IV was restored to power. Sir Humphrey was killed at the Battle of Barnet on 14 April 1471 fighting on the Yorkist side.