Could someone please give me the exact spelling of the name in this entry.
I am seeing maybe Geiliclosii. But I am really not sure or familiar with that name. I have seen it several times, the handwriting is always the same, and I still am not sure of it.
In italian the most common form of the latin name Aloysius is Luigi.
Guglielmo has german origins and it's not present in the classic latin, but it arrived in Italy in the Middle Ages and it has various spellings (like Maestra said).