Hi
Seals can also be linked to Universities, Colleges, Public Schools and other Institutions as follows:-
Ecclesiastical Heraldry,
Universities and Colleges,
Public Schools,
the College of Arms and Lyon Office,
Public Institutions,
Civic Heraldry;
Merchant Companies;
Guilds.
Looking at dobfarm's (I think) colour altered Seal.
Fairly sure I can see 1801KIN[?] (top).
George Hood would be about 16 years of age, in 1801.
Despite Coo being on the Seal, I have enquired with the very old:-
a) King's School, of Pontefract, now given as Wakefield and
b) King's Hall, Cambridge, where John Coo was appointed Fellow in 1432,
if it might be their Seals and if George Hood was a student?
For all we know, Coo could also have gifted money to an Educational Institution.
Regards Mark