David de Lindsay of the Byres

David de Lindsay the younger, also called David Lindsay of the Byres (died 1279), was a 13th-century Scottish knight and crusader. A minor baronial lord of a family of English origin, he was the son of David de Lindsay and held lands in East Lothian. He became Justiciar of Lothian under Alexander II of Scotland in 1241. This position had been held by his father earlier in the century.
According to Hector Boece, an anachronistically named "David Lindsay of Glenesk" was taken to Egypt on crusade (the Seventh Crusade) by Patrick II, Earl of Dunbar. If this was this David Lindsay, then he was one of many Lothian barons taken by Patrick on this crusade. He rose to further national prominence as a client of the Comyns during the minority of Alexander III of Scotland, becoming a regent in 1255 and royal Chamberlain in 1256.
He went on Eighth Crusade/Ninth Crusade with Prince Edward, and died in Egypt, c. 1279. He was the father of Alexander Lindsay of Barnweill.