List provided by Joy Fuller/Cozens , this John may be a brother to “my” George!
A George d 5 june 1809 and Elizabeth d 20 Feb 1837 both age 86 are buried at Monkton churchyard, these may be the ancestors of George, also John b 1787? and William b 1793 d 1823 possible brothers, but this is unproven.
(Please contact me if you have further information in this regard.)
1. John Barnes (b.Abt 1781-Pembroke,Pembs;d.15 May 1853-Westgate,Pembroke,Pembs)
sp: Elizabeth John (b.Abt 1789/91;m.21 Sep 1813;d.18 Jul 1844-Pembroke,Pembs)
-2. William Barnes (b.29 Apr 1816-Pembroke,Pembs;d.11 Feb 1862-Pembroke Dock,Pembs)
sp: Winifred Richards (b.Abt 1818-St. Mary's,Pembroke;m.27 Mar 1842)
--3. John Barnes (b.Abt 1846-St. Mary's,Pembroke)
sp: Mercy (b.Abt 1849-Chatham,
-2. Kezia Barnes (b.Abt 1821)
sp: George Phillips of Cosheston - m. 04 Jan 1846 (St Marys)
--3. John Barnes Phillips (b.Abt 1847-Woolwich,Kent;d.4 Jun 1854)
-2. John Barnes (b.Abt 1822-Pembroke St. Mary's,Pembs)
sp: Frances Meredith (Elizabeth?) Fender (b.Bef 10 Aug 1827-Pembroke,Pembs;m.6 Jul 1850)
--3. John F Barnes (b.Abt Jan 1851)
--3. Ellen Barnes (b.Bef 10 Sep 1856-Pembroke Dock,Pembs;d.Bef 17 Jan 1858-Pembroke Dock,Pembs)
--3. Sarah E Barnes (b.Abt 1858-Pembroke Dock,Pembs)
--3. William George Barnes (b.Bef 27 Nov 1861-Pembroke Dock,Pembs;d.Bef 8 Mar 1862-Pembroke Dock,Pembs)
--3. Francis Albert Barnes (b.29 Jan 1863-Pembroke Dock,Pembs)
--3. Walter W Barnes (b.Abt 1865-Pembroke Dock,Pembs)
--3. Edgar Vincent Barnes (b.10 Jan 1868-Pembroke Dock,Pembs)
-2. Jemima Barnes (b.Abt 1825)
-2. Frederick Barnes (b.Abt 1828-Pembs)
sp: Sarah (b.Abt 1827-Portsea,Hampshire)
--3. William Barnes (b.Abt 1858-Pimlico)
--3. Walter Barnes (b.Abt 1860-Pimlico)
--3. Joseph Barnes (b.Abt 1862-Pimlico)
NOTE:- “In the year 1872 Mr Frederick K Barnes a gentleman of considerable
eminence as a naval constructor was appointed Surveyor of Dockyards.” Born
Since the 1881 census gives FK Barnes ‘Surveyor of Dockyards’ b Pembroke abt 1828 and the Frederick Barnes in the above family tree is the only one in the 1841 census b abt 1828 in Pembroke we must assume that this is John’s Son
Source’s
1886 - Technology & Engineering (and similar) via Google books