Simon III de Senlis (c. 1138–1184) (or Senliz, St. Liz, etc.
He was passed over as Earl of Huntington, in favour of King Malcolm IV of Scotland, who granted the earldom to his own brother William.
Upon reaching of age, Simon was recognised in the earldom of Northampton in 1159.
Simon died in 1184 and was buried in the St Andrew's Priory, Northampton.
Simon married Alice, daughter of Gilbert de Gant, Earl of Lincoln and Rohaise de Clare,[2] they are known to have had the following issue: Both children predeceased their parents, without issue.