17 minutes ago, drpaladin said:

From the Latin jocundus,  meaning agreeable or delightful.

Yes, it seems that it came to English through French, or rather old French, as happened with a lot of words following the Norman conquest.

The OED records its first use to be by Geoffrey Chaucer around 1380. Interestingly its meaning seems unchanged since Chaucer, for which we can be jocund.

All I can add to what has been said, is perhaps some variety.

Jocund - Definition, Meaning & Synonyms | Vocabulary.com

The above led me(eventually) to, 'A Christmas Carole'. This in turn, led to the discovery of why, Bob Cratchit was called 'Bob' and what 'Bob' meant in that time and place. Then of course, what we all(?) wanted to know and now do. What does, Bob's your uncle and Fanny's you aunt, mean?

Bob's your uncle and Fanny's your aunt - What does "Bob's Your Uncle" and "Fanny’s your aunt" mean in British slang? - The Slang Podcast - Learn British English Now - Deezer

Too Doo Loo,