https://www.archive.org/stream/conquerorhiscomp02planuoft/conquerorhiscomp02planuoft_djvu.txt Excerpt: TRACIE, "Sire de," 1. 13,605. The Norman family of Tracy does not appear to have been of much importance in England before the reign of Stephen, who bestowed upon Henry de Tracy the honour of Benstable (Barnstaple) in Devonshire; but the first of the name we hear of is Turgis, or Turgisins de Tracy, who with William de la Ferte was defeated and driven out of Maine by Fulk le Rechin, Count of Anjou, in 1073, and who was therefore in all probability the Sire de Tracy in the army at Hastings. Tracy is in the neighbourhood of Vire, arrondissement of Caen, and the ruins of a magnificent castle of the middle ages were and may still be seen there. In 1082 a charter was subscribed at Tracy by a William de Traci and his nephew Gilbert (Gallia Christina, xi. Instrum. p. 107), one or the other being most likely the son of Turgis, and the father of Henry of Barnstaple.
The name of Tracy– is principally known to the readers of English history from the unenviable notoriety of a William de Tracy, one of the cowardly murderers of Thomas & Becket, Archbishop of Canterbury, 1170; but his connection with the inain line is obscure, as in his charter granting to the Canons of Torre, in the county of Devon, all his lands at North Chillingford, he writes himself William de Traci, son of Gervase de Courtenay, whose name I do not find in the pedigree of that house. Publication: THE CONQUEROR AND HIS COMPANIONS. Author: James Robinson Planché, Somerset Herald. Publisher: Tinsley Brothers, 8, CATHERINE STREET, STRAND, LONDON. Year: 1874.
worldcat.org
Sudeley, Lord, Becket's Murderer William de Tracy, in The Sudeleys – Lords of Toddington, London, 1987, pp: 77–78, 82, 88, OCLC82268496