30-06-2018, 12:02 AM
I can tell you exactly which marginalia letters are the less common forms so you have an idea what to look for. I've studied this intensively. It took me years and thousands of samples to be sure, but as of the last couple of years, I'm quite confident that I have a good understanding of which of the marginalia letters are individual to the scribe or unusual compared to other texts written in the same basic style. Unfortunately, I can't post it until after work. Sorry, duty calls. 
I can say don't look for the "p". It's common. Look for the "g". It's a Gothic Book style, not the usual Gothic Cursiva style, so one doesn't usually see it blended into a cursive text. I have a hunch the marginalia writer learned both Book and Cursive hands. There are other slight traces of Book hand. This is clearly not a professional scribe, but that doesn't mean the writer didn't have a good education.
I can say don't look for the "p". It's common. Look for the "g". It's a Gothic Book style, not the usual Gothic Cursiva style, so one doesn't usually see it blended into a cursive text. I have a hunch the marginalia writer learned both Book and Cursive hands. There are other slight traces of Book hand. This is clearly not a professional scribe, but that doesn't mean the writer didn't have a good education.