The Rev. Philip Antoine de Teissier was the third son of James (first Baron) de Teissier (1794–1868), of Woodcote Park, Epsom, Surrey, who was appointed a Baron of France by Louis XVIII on 4 December 1819 '‘in consideration for the kindness shown by his father a merchant of London during the French Revolution to French subjects, and in acknowledgement of the loyalty of the head of the family Jean Antoine (de Teissier) 3rd Baron of Marquerittas who was guillotined 20 May 1794'’.