This looks like the DIY version?
https://www.proquest.com/eebo/docview/2240901487/99852759/A481D7520C494C66PQ/1?accountid=12799&sourcetype=Books
found the password! Yes I can see that after registering and it's the sort of thing I had in mind., though applying to London livery companies.
The scenario I had in mind was that the daughter of armigerous family dies and they don't want people thinking she was married to a commoner. So, they say to the masons, "There must be something you have for the Kitchingmans." Masons thumb through their reference books and find some grant by Camden in 1616 and say "That will do, who would know any different, it's from Yorkshire anyway."
Perhaps I am overthinking this! The alternative explanation would be that two branches of the family that I haven't been able to connect, treasure/remember the grant of arms and ensure it is set in stone. However, William K, father of the Dorothy in St Peter Mancroft, has a 1719 memorial in Halifax St John absent any arms.
On a slightly different note, the grant of arms by Camden was in Helmsley but I don't have any Kitchingmen living there at that time. Helmsley is one of the places where the quarter sessions took place, so could it have been a central location for granting arms?