Hello Phil,
Indeed
Percival C. Gomm, is the youngest brother of the late Wing Commander Gomm, DSO, DFC; and yes, he flew Spitfires with 443 Squadron (RCAF); however I do not have the details of him being POW. It seems that he crash-landed his machine on neutral territory, which was occupied hours previously by S.S. troops...and it seems he returned back to Base later.
I do have more on him and two of his own sons were present at the Cerimony held last 23rd October.
Most humbly yours,
Adriano S. Baumgartner, ASV 00.344
baumgartner_asv@yahoo.com.br