Our next armorial memorial in Canterbury Cathedral is to a Captain in H.M. Navy who took part in a famous (at the very least on this side of the Atlantic) naval encounter during America's Revolutionary War.
On a wreath or and sable, a lion’s head erased or.
I have not (yet) found a coat of arms for Capt. Piercy. For that matter, I have not found this crest associated with that name, either. The closest I can find in Fairbairn’s Crests is “Pearsall, Eng., a lion’s head, erased, or.”
Could this be a case of “bucket shop” heraldry, where someone “borrowed” a crest from another family with a similar-sounding surname and ascribed it to Captain Piercy here? It is not unknown for such to have happened in the 18th Century; the Gore roll of arms compiled in Boston, Massachusetts in the early and middle 1700s has some examples of exactly that procedure.