Where does “Angra do Heroísmo” come from?

Angra do Heroísmo (English) comes from Portuguese Angra do Heroísmo, from Portuguese do, from Old Portuguese do, from Old Portuguese de, from Latin dē, from Latin post, from Latin poste, from Proto-Italic posti — afterwards, post; by, at.

Ancestry of “Angra do Heroísmo”, step by step

StepLanguageWordMeaning
1PortugueseAngra do HeroísmoBay of Heroism
2Portuguesedofrom the; of the
3Old Portuguesedo—
4Old Portuguesedeof
5Latindēof; concerning; about
6Latinpostbehind; after, since, besides, except; behind,...
7Latinposteablative singular of postis
8Proto-Italicpostibehind, after
9Proto-Indo-Europeanpóstiafter
10Proto-Indo-Europeanpósafterwards, post; by, at
Every word from Proto-Indo-European pós →Every word from Proto-Indo-European pósti →Every word from Proto-Italic posti →