William Montagu, 1st Earl of Salisbury English nobleman (1301–1344) Parents Elizabeth Montacute William de Montacute, 2nd Baron Montacute Children John de Montacute, 1st Baron Montacute Lady Sibyl Montagu Philippa de Montagu Lady Elizabeth Montagu William de Montacute, 2nd Earl of Salisbury Siblings Isabel Montague Simon Montacute Elizabeth Montague Katherine Montague Alice Montague Edward Montagu, 1st Baron Montagu Maud Montague Hawise de Montagu John de Montagu Partners Catherine Montagu, Countess of Salisbury
