ETYMOLOGY
from fair (adj.) + -some
EXAMPLE
“… Weel, man, tho’ I’m no just every man’s dog that whistles, on me, I see we maun pit our shouthers to the wheel thegither, if it is ainly to mettle up the King no to be sae muckle hoodwinked by yon’ upstart Lord : that the royal Jamie should be sae come ower by a fairsome face an’ a saucy tongue aye gars me think there maun be glamour in the world yet — an’ if ever I saw ane that has the look o’ a witch wife, it wad be my opinion leddy Buckingham has an ower uncanny glint in her eye. …”
From: The Prophecy
By Rachel Evelyn Butler, 1862
Lexicophilia 