^Treadwell, Victor (2006). The Irish Commission of 1622: An Investigation of the Irish Administration, 1615-1622, and Its Consequences, 1623-1624. Irish Manuscripts Commission. ISBN978-1-874280-63-7.
^Cokayne, George Edward (1900). Complete Baronetage, 1611 to 1800. Vol. I (1st ed.). Exeter: William Pollard & Co. p. 229, line 23. OCLC866278985. I. 1622? 'George Courtenay, Esq. of Newcastle, co. Limerick' was cr. [created] a Bart. [I. (Ireland)] as above, presumably in Jan. 1621/22, the Privy Seal being dat. at Westm., 10 Dec. 1621. – 1611 to 1625