I mostly agree, but for example Andrea https://en.wikipedia.org/wiki/Andrea is a masculine name in Italian and a feminine name in Spanish. Here in Argentina it's mostly masculine, but if someone has many Italian ancestors, it may be masculine.

> It is part of the Italian male names ending in a, some others being Elia (Elias), Enea (Aeneas), Luca (Lucas), Mattia (Matthias), Nicola (Nicholas), Tobia (Tobias).

> Ends in 'a' = female: a relatively safe assumption, as far as an assumption here can be safe, with no other context. A strong majority in many places will match that.

Which places? I guess I ask because your next sentence:

> Many of the exceptions will be obviously foreign names with traditional spelling

Which makes me wonder if you meant "US places", because I can think of a few male names, which maybe categorised as "foreign" if you're in the US, that end in "a".

e.g. Csaba (pronounced "Chubba") is a reasonably common Hungarian name.

And some not so "foreign" ones, albeit mostly with Biblical roots, like Joshua and Ezra.

> Many of the exceptions will be obviously foreign names with traditional spelling, which can go either way

Or the names of biblical prophets like Ezra or Elisha. Not very popular today but you can find a lot of them in 19th century records.

See https://www.reddit.com r/tragedies for all sorts of, uhh, inventive spellings and names.