Thank you to everyone for the information that has been posted, it has let me find ancestors another generation or two back (including another Honour (which sounds odd to modern ears, but if we can have as names Faith and Hope, why not Charity and Honour?)), giving me some firm roots in Cornwall.
While Honor/Honour is a rare forename in US, it's not particularly unusual in UK.
See: https://en.wikipedia.org/wiki/Honor_(given_name)
Best example being actress Honor Blackman.
Thank you, I realized sometime after I posted that, as much as I try not to, I had expressed a rather US-centric statement. Apologies.
Perhaps interesting that in all my genealogical excavations, this is my first encounter with the name Honour, then finding two, and only in exploring a Cornish branch. Most of my maternal ancestors are found in Scotland, and it seems half of them are George or Mary. I wonder how much of that is due to Scottish naming conventions, and how much might possibly be being named after royals. (Or, starting as named after royals and being perpetuated by naming conventions.)
Re: US-centrisms, I’m finding it interesting how that is affected by my realizing that my family has more or less 120 years’ presence here, but hundreds of years of roots elsewhere. Genealogy is giving me more than the names of family.
