Harriett Roberts1 
- [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 233. Hereinafter cited as The New Extinct Peerage.
Captain Thomas Roberts1
Child of Captain Thomas Roberts
- Harriett Roberts1 d. 13 Feb 1908
- [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 233. Hereinafter cited as The New Extinct Peerage.
Frances Eliza Roberts1 
From 20 October 1842, her married name became Grant.1
- [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 233. Hereinafter cited as The New Extinct Peerage.
General Charles Grant1
He was appointed Companion, Order of the Bath (C.B.)1 He gained the rank of General in the Bengal Artillery.1
- [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 233. Hereinafter cited as The New Extinct Peerage.
Maria Isabella Roberts1 
Her married name became Welwood.1
- [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 233. Hereinafter cited as The New Extinct Peerage.
Colonel W. M. G. M. Welwood1
- [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 233. Hereinafter cited as The New Extinct Peerage.
Isabella Bunbury1 
From before 1830, her married name became Maxwell.1 From 2 August 1830, her married name became Roberts.1
Child of Isabella Bunbury and Major Hamilton G. Maxwell
- Innes Maxwell+2 d. 1897
Children of Isabella Bunbury and General Sir Abraham Roberts
- Harriet Mercer Roberts1 d. 8 Oct 1880
- Field Marshal Frederick Sleigh Roberts, 1st Earl Roberts, V.C.+1 b. 30 Sep 1832, d. 14 Nov 1914
- [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 233. Hereinafter cited as The New Extinct Peerage.
- [S1437] Robert J. M. Barrett, “re: Barrett Family,” e-mail message to British and European Nobility Register, 27 August 2005 – 31 May 2008. Hereinafter cited as “re: Barrett Family.”
Abraham Bunbury1
Child of Abraham Bunbury
- Isabella Bunbury+1 d. 7 Mar 1882
- [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 233. Hereinafter cited as The New Extinct Peerage.
Major Hamilton G. Maxwell1 
He lived at Ardwell, Wigtownshire, ScotlandG.1
Child of Major Hamilton G. Maxwell and Isabella Bunbury
- Innes Maxwell+2 d. 1897
- [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 233. Hereinafter cited as The New Extinct Peerage.
- [S1437] Robert J. M. Barrett, “re: Barrett Family,” e-mail message to British and European Nobility Register, 27 August 2005 – 31 May 2008. Hereinafter cited as “re: Barrett Family.”
Harriet Mercer Roberts1 
- [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 233. Hereinafter cited as The New Extinct Peerage.