Month names collection / metastudy

[eggyk]

The question would be if they'd also replace a consonant "i" by "y". It feels like you'd only do it when "i" is a vowel, as in your "ydolorum" example.

I found a curious example yesterday of a transcript of correspondance from Gaspar Schets (born in antwerp, died in bergen/mons). I, J, and Y seem to be used in all positions. The correspondance is in french. You are not allowed to view links. Register or Login to view..

"je me recommande" is at the beginning of every letter, and sometimes is "ye me recommande". 

In one letter, as an example, starts with 
"ye me recommande" 
   
"yai rechu par ce porteur"
   
Uses y for i in "yl ny a point"
   
"vous dites byen"
   

Across his correspondance, month names are also slightly unusual, with "Yanuir",  both "Yuing" and "Juing", "Yulet". 

So across everything, Y was used as ʒ, and as a vowel in any position within a word. As this is a transcription, it's possible that J and y was confused, but considering that y is also found in the middle of words, and that y, j and i are all transcribed in various places I imagine that in those situations the letter looked like a y, regardless of what it really was.