Birth date from Joan Dagg
1841: ?
1851: Census record 1851, Mason in Dinnington. Gardeners Houses. Isaac Coxon, Servant, Unmarried 15 year old male. general servant, born Longhorsley. Living with  a William Fenwick, farmer of 200 acres employing 5 labourers.
Could the marriage be Isaac Coxon Wandsworth 1d 703? Seems unlikely but no other record found.
1861 Fawdon farm Gosforth
Isaac Coxon/H/M/27/Ag Lab/Longhorsley
jane/Wf/M/27/Gosforth
Margaret/Dau/3/Washington Durham
Isaac/Son/5 mths/Gosforth
1871: Living with wife and 5 children in 1871 census of Coxledge
Coxledge
Isaac H M 35 Ag Lab Long Horsley
Jane W M 36 Brunton
Margaret D 13 Durham/Harommah?
Isaac S 10 Lab at brick wks NBL/Hadricks Mill
William S 7 Scholar Fawdon
John S 5 Scholar Fawdon
Joseph S 1 Gosforth
1881: Farm bailiff at Brenkley in 1881 census with 4 children (not Margaret)
Dwelling: Cottage
1881 Census Place: Brenkley, Northumberland, England
Source: FHL Film 1342231 PRO Ref RG11 Piece 5097 Folio 61 Page 43
Marr Age Sex Birthplace
Isaac COXON M 46 M Long Horsly, Northumberland, England
Rel: Head
Occ: Farm Bailiff
Jane COXON M 47 F Gosforth, Northumberland, England
Rel: Wife
Isaac COXON U 20 M Gosforth, Northumberland, England
Rel: Son
Occ: Ag Lab
William COXON U 17 M Gosforth, Northumberland, England
Rel: Son
Occ: Ag Lab
John COXON U 13 M Gosforth, Northumberland, England
Rel: Son
Occ: Ag Lab
Joseph COXON 10 M Gosforth, Northumberland, England
Rel: Son

1891 census 39 Fishers Lane Cottages Longbenton
Isaac coxon/H/M/57/Colliery lab/employed/b Longhorsley
Jane/Wf/57/Gosforth
William/S/27/Colliery lab/b Gosforth

1901C: 57 Thames St, Wallsend
Isaac/H/65/gardener/Morpeth
Jane/W/65/Middle Brunta(?Brunton),Nbl.