↑ The Genealogy of the Existing British Peerage and Baronetage: Containing the Family Histories of the Nobility, Edmund Lodge
Hurst and Blackett, 1859
"Clerke VIII. Sir William Henry", Burke's Peerage, 1849, accessed at  2017-08-27. Full text: "Sir William Henry, in holy orders, rectory of Bury, in Lancashire; b. in 1751; m. in 1792, Byzantia, eldest dau. of Thomas Cartwright, Esq. of Aynhoe, co. Northampton..."