William Keith Mason, 4th Baron Blackford1 
He was educated at Harrow School, Harrow, London, EnglandG.1 He succeeded as the 4th Baron Blackford, of Compton Pauncefoot, co. Somerset [U.K., 1935] on 21 April 1977.1 He succeeded as the 4th Baronet Mason [U.K., 1918] on 21 April 1977.1
On his death, both of his titles became extinct.1
- [S2] Peter W. Hammond, editor, The Complete Peerage or a History of the House of Lords and All its Members From the Earliest Times, Volume XIV: Addenda & Corrigenda (Stroud, Gloucestershire, U.K.: Sutton Publishing, 1998), page 723. Hereinafter cited as The Complete Peerage, Volume XIV.
Sir Richard Blackham, 1st Bt.1 
He was a woollen manufacturer and a Turkey merchant.1 He was created 1st Baronet Blackham, of the city of London [England] on 13 April 1696.1
Children of Sir Richard Blackham, 1st Bt. and Elizabeth Appleyard
- Sir John Blackham, 2nd Bt.1 d. 2 Jul 1728
- Frances Blackham1 d. Feb 1729/30
- [S15] George Edward Cokayne, editor, The Complete Baronetage, 5 volumes (no date (c. 1900); reprint, Gloucester, U.K.: Alan Sutton Publishing, 1983), volume IV, page 166. Hereinafter cited as The Complete Baronetage.
Elizabeth Appleyard1 
From circa 1670, her married name became Blackham.1
Children of Elizabeth Appleyard and Sir Richard Blackham, 1st Bt.
- Sir John Blackham, 2nd Bt.1 d. 2 Jul 1728
- Frances Blackham1 d. Feb 1729/30
- [S15] George Edward Cokayne, editor, The Complete Baronetage, 5 volumes (no date (c. 1900); reprint, Gloucester, U.K.: Alan Sutton Publishing, 1983), volume IV, page 166. Hereinafter cited as The Complete Baronetage.
Thomas Appleyard1
Child of Thomas Appleyard and Mary Boynton
- Elizabeth Appleyard+1 d. c Dec 1731
- [S15] George Edward Cokayne, editor, The Complete Baronetage, 5 volumes (no date (c. 1900); reprint, Gloucester, U.K.: Alan Sutton Publishing, 1983), volume IV, page 166. Hereinafter cited as The Complete Baronetage.
Mary Boynton1
Child of Mary Boynton and Thomas Appleyard
- Elizabeth Appleyard+1 d. c Dec 1731
- [S15] George Edward Cokayne, editor, The Complete Baronetage, 5 volumes (no date (c. 1900); reprint, Gloucester, U.K.: Alan Sutton Publishing, 1983), volume IV, page 166. Hereinafter cited as The Complete Baronetage.
Thomas Boynton1
Children of Thomas Boynton
- [S15] George Edward Cokayne, editor, The Complete Baronetage, 5 volumes (no date (c. 1900); reprint, Gloucester, U.K.: Alan Sutton Publishing, 1983), volume IV, page 166. Hereinafter cited as The Complete Baronetage.
Sir John Boynton1
- [S15] George Edward Cokayne, editor, The Complete Baronetage, 5 volumes (no date (c. 1900); reprint, Gloucester, U.K.: Alan Sutton Publishing, 1983), volume IV, page 166. Hereinafter cited as The Complete Baronetage.
Sir John Blackham, 2nd Bt.1 
He lived at Lyons Inn, St. Clement Danes, London, EnglandG.1 He succeeded as the 2nd Baronet Blackham, of the city of London [E., 1696] on 29 June 1728.1
On his death, his baronetcy became extinct.1
- [S15] George Edward Cokayne, editor, The Complete Baronetage, 5 volumes (no date (c. 1900); reprint, Gloucester, U.K.: Alan Sutton Publishing, 1983), volume IV, page 166. Hereinafter cited as The Complete Baronetage.
Frances Blackham1 
- [S15] George Edward Cokayne, editor, The Complete Baronetage, 5 volumes (no date (c. 1900); reprint, Gloucester, U.K.: Alan Sutton Publishing, 1983), volume IV, page 166. Hereinafter cited as The Complete Baronetage.
Sir Lambert Blackwell, 1st Bt.1 
He held the office of Knight Harbinger and Gentleman of the Privy Council in 1697.1 He was appointed Knight on 18 May 1697.1 He held the office of Envoy to Genoa and Tuscany between 1698 and 1705.1 He held the office of Member of Parliament (M.P.) for Wilton between 1708 and 1710.1 He was a governor of the South Seas Company in 1717.1 He was created 1st Baronet Blackwell, of Sprowston Hall, co. Norfolk [Great Britain] on 16 July 1718.1
Children of Sir Lambert Blackwell, 1st Bt. and Elizabeth Herne
- Elizabeth Blackwell+3 d. 21 Mar 1774
- Sir Charles Blackwell, 2nd Bt.+2 b. c 1700, d. 18 Jul 1741
- [S15] George Edward Cokayne, editor, The Complete Baronetage, 5 volumes (no date (c. 1900); reprint, Gloucester, U.K.: Alan Sutton Publishing, 1983), volume V, page 46. Hereinafter cited as The Complete Baronetage.
- [S15] George Edward Cokayne, The Complete Baronetage, volume V, page 47.
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 291. Hereinafter cited as The New Extinct Peerage.
