Hi Ann
The Power baptism that I had see was in St Ouen for a Patrick Power, the son of Michael and Jane Power, on 16th Jan 1800. Michael was in the Regiment of Loyal Irish Fencibles. So no connection.
I have also look through the military baptisms 1784 to 1817 and General Don's military census of 1806 and found no mention of a Power. The earlist list of catholic baptisms starts 1811.
Stewart