I've remade the English faction and unit names submods for DeI. These are the new official versions. I don't see a reason to combine them into one mod, but you can use one or both, however you like.
English Faction Names: This mod reverts most faction names to vanilla (English), or creates Anglicized versions of the new emergent faction names. A few stay as they are (Saka Rauka for example, since that's different enough from the Massagetae to justify the change).
English Unit Names: This mod translates unit names into English. I've left some words in Latin or Greek where it makes sense to give the unit a bit more flavor - "Hastati," "Agema Cavalry," etc.
Download Links:
English Faction Names
Steam Workshop link
English Unit Names
Steam Workshop Link
Update Log (Factions):
1/10/2017 - Remade the mod for DeI 1.2
1/16/2017 - Fixed Corsica and Sardinia emergent factions
5/22/2017 - Updated for 1.21, and Steam version updated.
7/15/2018 - Updated for DeI 1.23 (Changed the Mauryans' name).
Update Log (Units):
1/10/2017 - Added for DeI 1.2
9/2/2017 - Updated for 1.22 and added Steam version.
7/15/2018 - Updated for DeI 1.23.
8/12/2018 - Fixed some errors.
11/10/2018 - Fixed Seleucid Agema Spearmen.
3/1/2021 - Updated for new units in DeI 1.2.7. I might have missed something, as it's been a while since I've updated this mod. Let me know if that's the case.
5/7/2022 - Updated for DeI 1.3 thanks to Rhetor's hard work.
If you're using these submods, you may also be interested in my vanilla city names submod. You can find that here.