Where does “São Tomé” come from?

São Tomé (Polish) comes from Portuguese São Tomé, from Portuguese São, from Old Portuguese são, from Latin sānus, from Proto-Indo-European swā-n- — healthy; whole; active; vigorous.

Ancestry of “São Tomé”, step by step

StepLanguageWordMeaning
1PortugueseSão ToméThomas the Apostle, Saint Thomas
2PortugueseSãoforms the titles of male saints whose names begin...
3Old Portuguesesão—
4Latinsānussound in body, healthy, whole, well
5Proto-Indo-Europeanswā-n-healthy; whole; active; vigorous
Every word from Proto-Indo-European swā-n- →Every word from Latin sānus →Every word from Old Portuguese são →