Continuing our circumlocution of the Cloister at Canterbury Cathedral, we come to this memorial set into the floor:
Here lieth Interred the Body of
ISAAC TERRY, Gent.
who departed this life Septemr
the 18th 1754 Aged 34 Years.
Arms: Ermine on a pile gules a leopard’s head jessant-de-lis or, a crescent for difference (Terry), impaling, A fess dancetty between three birds. Crest: A dragon’s head erased vert.
Burke’s General Armory notes - Terrey (London): Ermine on a pile gules a leopard’s face jessant-de-lis or, with the crest: A dragon’s head erased vert vomiting flames of fire proper collared ermine ringed and lined or.
Papworth’s Ordinary of British Armorials gives several possibilities for the wife’s arms:
Thomas (Bromley, Kent): Argent a fess dancetty sable between three Cornish choughs proper.
Thomas (Clifford’s Inn): Or a fess indented sable between three Cornish choughs proper.
Pargiter (Barking, Essex; London; and Chipping Norton, Oxford): Azure a fess indented between three pigeons or.
Dow (London): Sable a fess dancetty ermine between three doves argent.
Dove (East Bransboth, Suffolk): Sable a fess dancetty ermine between three doves close argent.
Wheler (Colchester and county Lincoln): Sable a fess dancetty … between three doves proper.
There are others with a fess dancetty between three falcons and a fess dancetty between three martlets, but I find these less likely.
If I had to guess, I believe that Thomas is the most likely candidate for Isaac Terry's wife's arms here.
The Kent Archaeological Society (https://www.kentarchaeology.org.uk/19/136.htm) informs us that Isaac Terry (born about 1720) was the son of Abraham and Mary Terry and was born at Faversham.
This Isaac Terry is not the Isaac Terry who gave the sermon “The religious and loyal subject's duty considered : with regard to the present Government and the Revolution” in the Cathedral Church of Canterbury, on Wednesday, January 30, 1722-3.