The letter ‘K’ as a mark of origin?

[Petrasti]

I understand your question, but that wasn't what I was getting at. And yes, I recognize the 'a' and 'o' in the manuscript as Latin letters, but what we don't know is what the letters stand for. My question was therefore hypothetical, since the spelling in medieval manuscripts might possibly differentiate origins through the function of the 'K' or 'C'.