[sombragris]

> Patrimony is the English word

That's correct. But as a translator, that's a word I wouldn't even consider to use as a translation for patrimonio or similar. Almost no English speaker would understand me. At the very best that person would consider my translation as very idiosyncratic or quirky.

> Even inside Romance languages, false friends exist,

Also correct, but in this case the cognates have almost equivalent meanings. See, for example: https://dictionary.reverso.net/french-spanish/patrimoine