If "kenned" is the right reading, we must suppose the meaning to be "too clearly perceived."
“I kenned by this time what he was to be at,” said John to Allison, when he had got thus far.
"It was ane that kenned what he was saying weel eneugh," said Jeannie.
He was a manly, pleasant lad, in the days when I kenned him.
It was but a puir Westland man that we kenned not the name o'.
Then one of the officers blew a whistle, and I kenned what that was for.
He never was a doonricht leear, sae lang's I kenned him—ony mair nor yersel!
And I'm sure, if a' was kenned, I have more to complain o' than she has.
"I kenned her the moment I saw her in the streets of this toon, not long before Christmas," was the reply.
Now "Auld Anton" of the Duchrae was a kenned man all over the country-side.
"to know," Scottish dialect, from Old English cennan "make known, declare, acknowledge" (in late Old English also "to know"), originally "make to know," causative of cunnan "to become acquainted with, to know" (see can (v.)). Cognate with German kennen, Danish kjende, Swedish känna. Related: Kenned; kenning.
"range of sight," 1580s, a nautical abbreviation of kenning.
"house where thieves meet," 1560s, vagabonds' slang, probably a shortening of kennel.
A conformist, conventional man; a man lacking any but bland typical characteristics: Mr Quayle has been called a sort of Ken/ Bergin, the male villain, is reprising his role as the Ken-doll monster of Sleeping With the Enemy
[fr the male counterpart of the Barbie doll]