Thomas is easy to find 1871/1881 in Wales, 1871 under Stimson born c 1848, Rutland.
1861 Census he is not with possible Parents in Glamorgan, Wales;
William born c 1815, Whissendine, Ruttland
Ann born c 1815, no POB shown
RG9/4041/56/5
Trees have Ann born c 1812, Nth Luffenham, Rutland and the IGI confirms a Christening for Ann of that date.