Note that Richardson in Royal Ancestry under HARINGTON names only the following children: John, Joan, Elizabeth, Margaret.
He did homage & had livery of his mother's lands before he came of age, 12 May 1296. He probably accompanied the Bishop of Ely on a mission to the Court of Guelders, Jan. 1295/6. Summoned to Parliament whereby he is held to have become Lord Multon, 6 Feb. 1298/9. Served in Scotland & on the border between 1297 & 1315 being one of the northern barons chiefly concerned with defense against the Scots. He took part in the Siege of Carlaverock, 1300. His seal was appended to the Barons' letter to the Pope, Feb. 1300/1. In 1305 he went to Ireland with a large retinue & was again in Scotland in 1306. Summoned to the coronation of King Edward II, Jan. 1307/8. However, he later rebelled & joined Thomas, Earl of Lancaster at Pontefract, May 1321, but died before the Battle of Boroughbridge which was lost by the rebels. Died 1321/2.
It is uncertain whether it was he or his namesake nephew of Egremont who was appointed Warden of the Coast and keeper of Carlisle Castle.
I propose: Delete links to parents and to wife Maud Vaux and place those links on De_Moreville-13. Also daughter Multon-4 to be moved to that profile. Eventually we can then try to restore this profile to be in the line of descent from his current "brother" Lambert, (which already partly exists in duplication)