Where does “thirdborn” come from?

thirdborn (English) comes from English Born, from English bourne, from Middle English bourne, from Old English burna, from Proto-West Germanic brunnō, from Proto-Germanic brunnô, from Proto-Indo-European bʰréh₁wr̥, from Proto-Indo-European bʰrewh₁- — to bear, carry.

thirdborn (English): Born as the third child to parent or family;...

Definitions

  1. Born as the third child to parent or family;...

Ancestry of “thirdborn”, step by step

thirdborn traces back through two separate lines of ancestry.

via English Born

StepLanguageWordMeaning
1EnglishBorngiven birth to
2EnglishbourneA boundary; A goal or destination; A stream or...
3Middle EnglishbourneA stream or river; a watercourse regardless of size
4Old Englishburnastream
5Proto-West Germanicbrunnōwell, spring
6Proto-Germanicbrunnôsource; wellspring; fountain; brook; stream;...
7Proto-Indo-Europeanbʰréh₁wr̥well, spring, source
8Proto-Indo-Europeanbʰrewh₁-to boil; to brew
9Proto-Indo-Europeanbʰer-to bear, carry

via English third

StepLanguageWordMeaning
1EnglishthirdThe ordinal form of the cardinal number three;...
2Middle Englishthirde
3Old Englishþriddathird
4Proto-West Germanic*þriddjōthird
5Proto-Germanicþridjôthird
6Proto-Indo-Europeantretyós
7Proto-Indo-Europeantr̥tyósthird
8Proto-Indo-Europeantréyesthree
Every word from Proto-Indo-European bʰer-
thirdborn — Etymology, Origin & Word History | Etymology Explorer