Month names collection / metastudy

[Jorge_Stolfi]

They also didn't like "mn" so they wrote "mpn" instead: sompnus, dampnatus, ...

To make an "mn" sound one must close the lips during the "m" then open them for the "n".  That is similar to how one forms the "p" sound. So maybe people did pronounce or hear a "p" there.

Many seemingly random y/i substitutions:
tytulus
hystoriis
ydola egipti
ymaginem
moyses (Moses)
symonem syrenensem (Simon of Cyrene)
...

In some of those the "y" seems to be marking the stressed syllable ("Idola" rather than "idOla").

In others (like "ymaginem", "Moyses" and "Symon") the "y" was used perhaps because those are "foreign" words that came into Latin from or through Greek.  I gather that "y" (like "k") was used in Roman times only for words of Greek origin; is that so?

All the best, --stolfi