Just posting in case relevant.
On most Census Richard is born c 1823. Could he be older?
Marriage;
01 June 1820, St Giles, Reading, Berkshire
John CHASE
Catherine ILLSLEY
1841 Census
Street,
Whitchurch, Oxfordshire
HO107/882/9/Whitchurch
John CHASE, 50, Innkeeper
Catherine Chase, 40
Sarah Chase, 17
Louisa? Chase, 9
Richard ILSLEY, 19
Richard DAY, 70, Ag Lab
Jane Day, 70
All NOT born in County
1851/1861 Census Catherine Chase born c 1799 Englefield, Berkshire is living in Reading St Mary, Bekshire and Widowed.
Seems a bit of a coincidence re Oxfordshire/Berkshire as POB for Richard.
Trish

EDIT I cant find a Marriage for Richard/Martha!