Marriage of William Bolitho of Polwithen and Mary Hichens Yonge,
Cornwall OPC Marriages,
Royal Cornwall Gazette p 8,
St James’s Chronicle p 4,
West of England Conservative and Plymouth and Devonport Advertiser p 5.
Burke, Bernard, Genealogical and Heraldic History of the Landed Gentry, vol I p 178. 8th edition, , London, Harrison & Sons.
Vivian, JL (ed). The Visitations of the County of Devon. p 842. , Exeter, Henry Eland
(pedigree of Yonge of Colebrooke),
Vivian , op. cit. p 847
(pedigree of Bolitho).