Harry Collis (Thomas' great-grandson) Married Olive Ann Beaumont-Smith.She was from Beckenham, Kent and they settled there. Harry was a journeyman (house decorator) and it is possible that he was originally from Hampshire (30 Miles across Surrey to Kent).
I have no marriage record for Thomas, but his son: Henry Collis m. Matilda Cooke, 19 Jul 1840. His son: Henry Alfred Collis m. Emily Wiseman, 2 Apr 1876. His son: Harry Collis m. Olive Ann Beaumont-Smith, 31 Mar 1902.