Hi, Caravaggio.
Yes, indeed, some clues do appear in Latin, and some answers have to be given in Latin. Now, when I was at school, clever people were taught Latin, and those less gifted, were taught commercial subjects. I can still type. I still have a reasonable understanding of double entry book keeping. My shorthand left me within months of leaving school.
The Catholic Herald crossword is quite fun. It comes with two sets of clues for the one grid, one cryptic and the other not. Usually, the answers can be found using a Bible, a Concordance and a Dictionary of the Christian Church, together with a little bit of crossword understanding.
The sticking point this week was the clue: 'Saul's derviant in Jerusalem, seen half-cut with sailor, falling over. (4)
I had ?i?a. Reference to a sailor meant that the third letter was likely to be B, but what the first might be, could be found by trawling through a Concordance. Happily, we only have 26 letters in our alphabet. I started at A (strangely enough), and worked my way through to Z. The answer was Ziba. Still, it kept me away from the dishwasher.
Best wishes.
P