Where does “brenāgium” come from?

brenāgium (Medieval Latin) comes from Latin -āgium, from Old French -age, from Old Occitan -atge, from Latin -āticum.

Ancestry of “brenāgium”, step by step

StepLanguageWordMeaning
1Latin-āgium—
2Old French-ageforms nouns with the sense of 'action or result...
3Old Occitan-atgesuffix used to form masculine nouns
4Latin-āticum—
Every word from Latin -āticum →Every word from Old French -age →Every word from Latin -āgium →