Thomas de Monthermer, 2nd Baron Monthermer (born 4 Oct 1301, Stoke, Ham, Wiltshire - killed 24 June 1340 at the Battle of Sluys) was the son of Ralph de Monthermer, 1st Baron Monthermer and Joan of Acre, the daughter of Edward I.[1]
He gained the title of Baron Monthermer on the death of his father.[1]
He married Margaret Teyes.[1] They had one daughter, Margaret,[2] who in 1340 became the wife of John de Montacute, 1st Baron Montacute, the younger brother of William Montacute, 2nd Earl of Salisbury and son of 1st Earl. Their son John became the 3rd Earl of Salisbury and 4th Baron Monthermer. In 1340 he fought in the Battle of Sluys and died from wounds received in action.[1]