Here are some bit and pieces that you may or may not have:-
1861 census South Haigh St, Pembroke RG9/4156 folio 96 pg 16
Ann Tucker head widow 59 housekeeper
George son u 29 tailor
Edward grandson 11 scholar
all born Pembroke St Mary
Death registered John Tucker 1Q 1855 Pembroke 11a 517
1861 --uble(?) Street, Pembroke RG9/4156 folio 105 pg 34
William Tucker head m 25 bootmaker b. Monkton
Jane wife 27 b. Pembroke, St Mary
1861 8 Chapel Court East, Cyfartha RG9/1060 folio 95 pg 10
James Tucker head mar 33 miner b. Pembrokeshire
Margaret 29 b. Mon, Tredegar
Mary 4
John 2
both b. Merthyr
deaths registered Mary Tucker 1Q 1868 age 67 Pembroke 11a 487
Jane 1Q 1866 age 32 Pembroke 11a 560
2nd marriage for William 4Q 1867 Pembroke 11a 1221 to Margaret Davies
1871 Twyn y Wenallt, Llanelly, Breconshire Rg10/5587 folio 22 pg 13
James Tucker head mar 45 ag lab b. Pembroke
Margaret wife 41 b. Tredegar
Mary 14 b. Merthyr
James 5 b. Brec, Brynamman
1871 23 Brewery St North, Pembroke
Edward Tucker head m. 21 bootmaker b. St Michaels
Ann wife 21 b. Haverfordwest
1881 26 Dean St, St Anne's Soho, Middlesex RG11/0130 folio 81 pg 8
William Tucker head mar 44 bootmaker b. Pembroke
Margaret wife 43 b. Pembroke
Ann dau 8 b. St Anne's Soho
1881 Nr Jolly Colliers, Llanelly, Brec RG11/5465 folio 33 pg 16
James Tucker head mar 55 coalminer b. Cheriton(?), Pembs
Margaret wife 51 b. Tredegar
1881 17 Middle Prospect Row, Pembroke RG11/5412 folio 107 pg 23
Edward Tucker head mar 31 boot closer
Ann wife 31
William son 9
John son 3
Hubert J son 1
children all born Pembroke Dock
1901 128 Lillie Rd, Fulham RG13/61 folio 138 pg 20
William Tucker 65 bootmaker Pembroke, S Wales
Margaret wife 64 b. Pembroke, S Wales
can't see George after 1861 although there is a possibility but his age varies and is a few years older than yours. Think he gives his place of birth as Monkton and isn't a tailor.
hope this helps