On 14 November 1302 Elizabeth was married to Humphrey de Bohun, 4th Earl of Hereford, 3rd of Essex, also Constable of England, at Westminster Abbey.Like his father, grandfather, and great-great-grandfather, this Humphrey de Bohun was careful to insist that the king obey Magna Carta and other baronially-established safeguards against monarchic tyranny. He was a leader of the reform movements that promulgated the Ordinances of 1311 and fought to insure their execution. Battle of Boroughbridge, Yorkshire - The rebel forces were halted by loyalist troops at the wooden bridge at Boroughbridge, Yorkshire, where Humphrey de Bohun, leading an attempt to storm the bridge, met his death on 16 March 1322