If you use the Advanced Search for baptisms of William & Eunice MATHEWS & MATTHEWS

you will find Lydia - 8 April 1827, William - 17 April 1834, Ann - 5 June 1831, James - 13 November 1836 etc.

1841 Census Extra Parochial Ruardean Hill

Wm MATHEWS - 35 - Collier, born in County
ditto - age 7 (name for this child just a ditto from Wm above on the actual census)
James - 5
Eunice - 37
Ann - 10
Eunice - 2

???

1851 Census, Gloucester
Gloucester College Precints

MATTHEWS

William - 29 Solicitor, born Gloucester
Eleanor A - 27
William R A - 9 months
Lydia MATTHEWS - 28 - House Servant, born Newent

1861 Census, Staffordshire, Dudley

William MATHEWS - Boarder - age 26, Pit Engineer, born Gloucestershire Forest of Dean