- [S49] Mary Blanche Jane Kelly, Birth Certificate (24 Oct 1924), C Gray's Records, Sandhurst, Berkshire, England.
- [S52] Tessa Frances Mary Gray, Birth Certificate (unknown file date), unknown repository, unknown repository address.
- [S53] M, Charles Gray, Charlotte Stewart, Bolton, 8c, 529, Q4, 1916, C Gray's Records, Sandhurst, Berkshire, England.
- [S54] Charley Grey, Birth Certificate (24 Nov 1890), C Gray's Records, Sandhurst, Berkshire, England.
- [S55] Charles Gray, Death Certificate unknown number (10 Sep 1955 (age 64)), C Gray's Records, Sandhurst, Berkshire, England.
- [S56] Charlotte Stewart, Birth Certificate (7 Nov 1892), General Register Office of England and Wales, PO Box 2, Southport, Lancashire, England.
- [S57] Charlotte Gray, Death Certificate unknown number (29 May 1982), C Gray's Records, Sandhurst, Berkshire, England.
- [S58] Warren Stewart Gray, Birth Certificate (unknown file date), unknown repository, unknown repository address.
- [S60] Margaret Gray, Birth Certificate (unknown file date), unknown repository, unknown repository address.
- [S62] Frederick George Gray, Birth Certificate (unknown file date), unknown repository, unknown repository address.
- [S63] Victoria Gray, Birth Certificate (unknown file date), unknown repository, unknown repository address.
- [S70] M, Frederick George Gray, Hannah Richardson, Armley, , , , 1888, 007, C Gray's Records, Sandhurst, Berkshire, England.
- [S71] Frederick George Gray, Birth Certificate (3 Dec 1866), C Gray's Records, Sandhurst, Berkshire, England.
- [S75] M, Henry Gray, Anne Johnson, York, XXIII, 861, Q4, 1851, C Gray's Records, Sandhurst, Berkshire, England.
- [S80] Unknown author, Parish Register: St Mary Bishop Hill Junior, York 1813-1837 (n.p.: n.pub., unknown publish date).
- [S91] Donald Gray, Birth Certificate (2 Oct 1919), C Gray's Records, Sandhurst, Berkshire, England.
- [S124] Letter from Jean Gray (unknown author address) to Chris Gray, 27/8/1995; unknown repository (unknown repository address).
- [S147] Scotlands People, online http://www.scotlandspeople.gov.uk/
- [S250] West Yorkshire, England, Births and Baptisms, 1813-1910, online www.ancestry.com. Hereinafter cited as West Yorkshire Baptisms.
- [S266] London Metropolitan Archives, Saint George, Battersea, Register of baptisms (Provo, UT, USA: Ancestry.com). Hereinafter cited as Saint George, Battersea, Register of baptisms.
- [S325] London Metropolitan Archives, Saint Paul, Clapham, Register of marriages, online www.ancestry.com. Hereinafter cited as LMA marriages St Paul Clapham.
- [S326] London Metropolitan Archives, Saint Philip, Battersea, Register of marriages, online www.ancestry.com. Hereinafter cited as LMA marriages St Philip Battersea.
- [S333] Cambridge University Calender for the year 1938 - 1939 (London: Bentley House: Cambridge University Press, 1938). Hereinafter cited as Cambridge University Calender 1938-9.
- [S334] Cambridge University Calender for the year 1946 - 1947 (London: Bentley House: Cambridge University Press, 1947). Hereinafter cited as Cambridge University Calender 1946-7.
- [S383] West Yorkshire, England, Marriages and Banns, 1813-1935, online www.ancestry.com. Hereinafter cited as West Yorkshire Marriages.
- [S512] England, Select Marriages, 1538-1973, online www.ancestry.com. Hereinafter cited as England, Select Marriages, 1538-1973.
- [S617] 1914 British Army Service Records: WO363: James Gray 17219, British Army Service Records: WO363: James Gray 17219, 1914 (Kew, London, England: The National Archives). Hereinafter cited as British Army Service Records: WO363: James Gray 17219, 1914.
- [S634] London, England, Church of England Births and Baptisms 1813-1923, online http://www.ancestry.com/. Hereinafter cited as London, England, Church of England Births and Baptisms 1813-1906.
- [S636] Yorkshire baptisms - East Riding Archives & Local Studies Service, East Riding of Yorkshire Council, online www.findmypast.co.uk. Hereinafter cited as Yorkshire, baptisms.
- [S671] Manchester, England, Church of England Births and Baptisms, 1813-1915, online www.ancestry.com. Hereinafter cited as Manchester, England, Births and Baptisms, 1813-1915.
- [S687] Image: unknown subject, by unknown photographer; WO363; unknown repository, unknown repository address. Online http://www.ancestry.co.uk; unknown file name.
- [S713] Obit: Frederick G Gray, The Bolton News, http://www.theboltonnews.co.uk/news/…, 6 Jan 2016. Hereinafter cited as The Bolton News.
- [S714] Mayor retires from council, The Eastbourne Herald, http://www.eastbourneherald.co.uk/news/…, 20 May 2004. Hereinafter cited as The Eastbourne Herald.
- [S715] Mrs Jean Gray, The Bolton News, http://www.theboltonnews.co.uk/archive/2007/05/23/…, 23 May 2007. Hereinafter cited as The Bolton News.
- [S748] David John Gray, Death Certificate unknown number (17 June 1982), C Gray's Records, Sandhurst, Berkshire, England.
- [S754] Kenneth Gray, Birth Certificate (23 Jan 1923), C Gray's Records, Sandhurst, Berkshire, England.
- [S761] Sandy Howden, The Bolton News, unknown location, 11 March 2015. Hereinafter cited as The Bolton News.
- [S764] Lily Gray, Birth Certificate (18 oct 1906), C Gray's Records, Sandhurst, Berkshire, England.
- [S765] Lily Gray, Birth Certificate (18 May 1895), C Gray's Records, Sandhurst, Berkshire, England.
- [S766] James Gray, Birth Certificate (31 July 1899), C Gray's Records, Sandhurst, Berkshire, England.
- [S776] Louisa Gray, Birth Certificate (18 June 1865), C Gray's Records, Sandhurst, Berkshire, England.
- [S778] Mary Ann Gray, Birth Certificate (30 Oct 1855), C Gray's Records, Sandhurst, Berkshire, England.
- [S779] Eliza Gray, Birth Certificate (28 Dec 1853), C Gray's Records, Sandhurst, Berkshire, England.
- [S784] Mark Gray, Birth Certificate (4 Dec 1868), C Gray's Records, Sandhurst, Berkshire, England.
- [S798] William Gray, Death Certificate (12 February 1898), C Gray's Records, Sandhurst, Berkshire, England.
- [S799] William Gray, Death Certificate (23 July 1888), C Gray's Records, Sandhurst, Berkshire, England.
- [S804] Louisa Gray, Death Certificate (29th November 1865), C Gray's Records, Sandhurst, Berkshire, England.
- [S1056] England & Wales Government Probate Death Index 1960-2019, online findmypast.co.uk. Hereinafter cited as Probate Death Index 1960-2019.
- [S1089] Westminster, London, England Church of England Births and Baptisms, 1813-1919, online www.ancestry.com. Hereinafter cited as Westminster, England Births and Baptism.
- [S1122] Pennsylvania, U.S., Arriving Passenger and Crew Lists, 1800-1962, online ancestry.co.uk. Hereinafter cited as Pennsylvania, U.S., Arriving Passenger and Crew Lists, 1800-1962.