Iwonder if it is possible for someone to look up the details of the christening record for Thomas Perry 12 Jan 1817 Saint Mary's Portsea Hampshire. I think parents were John Perry and Mary ? also Marriage of John Perry and Mary Higgins 15 Apr 1815
Annie, Christening record exactly as you state on IGI, same names and dates. No further information. On IGI, same church, same parents are the following - possibly siblings to Thomas.
Richard Bolton Perry Chr 13 Feb 1814 Father John Dwelly Perry Mother Mary
Alfred Josiah Perry Chr 30 Dec 1821 Death 2 Oct 1822 Father John Perry Mother Mary
Same church as Thomas for both of these.
This covers the period 1805 to 1822.
Marriage of John and Mary date as you state but at St Thomas' Church, Portsmouth.