Hi Richard,

That burial age given for Thomas was wrong.

[Findmyfamily] 1891 census:
GEORGE, Thomas Head Married M 60 1831 General Labourer b. Falmouth Cornwall
GEORGE, Jane Wife Married F 58 1833 Carnarvon
GEORGE, Robert T Son M 15 1876 General Labourer Ramsey Isle of Man

RG number:RG12 Piece:4665 Folio:25 Page:14
Civil Parish: Llandysilio Municipal Borough:
Address:
8, Brow Dawel Terrace, Llandysilio, Menai Bridge County:Caernarvonshire

This is the same age which he gave in the 1881 census which you saw:
[Familysearch.org]
Thomas GEORGE Head M Male 50 England Seaman
Jane GEORGE Wife M Female 49 Wales
Thomas GEORGE Son U Male 5 Isle of Man, England Scholar
Mary Jane GEORGE Daur U Female 16 Wales
Source Information:
Dwelling 1 Barrack Yard
Census Place Maughold, Isle of Man, Isle of Man
Family History Library Film 1342345
Public Records Office Reference RG11
Piece / Folio 5600 / 117
Page Number 9

I couldn't find Thomas junr (or perhaps correctly: Robert T.) in the IGI for the IOM. Only HUGH RICHARDS GEORGE Christening: 09 MAY 1873 Ramsey, Isle Of Man, Father: THOMAS GEORGE, Mother: JANE [IGI].

Hugh Richard GEORGE aged 10 wks, College St, Ramsey, was buried in Maughold on May 11 1873.

I tried to find Jane in 1901 census but no luck - perhaps remarried?

This seems to be Robert T[homas?] visitor:
WILLIAMS, Thomas Head Married M 31 1870 Chemists (Manager) Menia Bridge Anglesey
WILLIAMS, Margaret Wife Married F 30 1871 Pwllheli Carnarvonshire
WILLIAMS, Thomas G Son Single M 4 1897 Prescot Lancashire
WILLIAMS, Ivor H Son Single M 2 1899 Prescot Lancashire
WILLIAMS, Elizabeth Sister Single F 23 1878 Menia Bridge Anglesey
GEORGE, Robert T Visitor Single M 25 1876 Mariner Quarter Master b.Isle of Man

RG number:RG13 Piece:3390 Folio:9 Page:10
Civil Parish: Birkenhead Municipal Borough:
Address:
169, Conway Street, Birkenhead

1911 census:
GEORGE, Thomas Head Married M 36 1875 Mariner A B b.Ramsey Isle of Man, Res
GEORGE, Elizabeth Wife Married 9 years F 30 1881 Menai Bridge North Wales
["children born alive" none]

RG number:RG14 Piece:22458 Reference:RG14PN22458 RG78PN1323 RD455 SD6 ED15 SN83
Registration District:
West Derby Sub District:
Kirkdale Enumeration District:
15 Parish:Kirkdale
Address:
47 Hogarth Road County:Lancashire

[Elizabeth Williams from the previous census?]

Sue