Where does “Ostallgäu” come from?

Ostallgäu (German) comes from German Allgäu, from German gau, from Middle High German göu, from Old High German gawi, from Proto-Germanic *gawi, from Proto-Germanic gawją, from Proto-Germanic gaawja, from Proto-Germanic ga- — resin.

Ancestry of “Ostallgäu”, step by step

Ostallgäu traces back through two separate lines of ancestry.

via German Allgäu

StepLanguageWordMeaning
1GermanAllgäu
2Germangau
3Middle High Germangöushire, district
4Old High Germangawi
5Proto-Germanic*gawi
6Proto-Germanicgawjądistrict, shire, region, area
7Proto-Germanicgaawjariverlands, lakeside land
8Proto-Germanicga-Indicates association or togetherness; co-;...
9Proto-Indo-Europeanḱómbeside, near, by, with
10Proto-Indo-EuropeanḱeDeictic particle, here; Post-positional...
11Middle Englishkyt
12Germankittputty certain kinds of cement used for fixing e.g. window panes
13Old High Germankuti
14Proto-West Germanickwidugum, resin
15Proto-Germanickweduzresin

via German ōst

StepLanguageWordMeaning
1Germanōstthe east
2Middle High Germanōst
3Old High Germanōsteast
4Old Norseaustreast
5Proto-Germanicaustrąeast; east, eastward
6Proto-Germanicaustrazeast, eastern
7Proto-Indo-European*h₂éwsterosin the direction of dawn, east
Every word from Proto-Germanic kweduzEvery word from Proto-West Germanic kwiduEvery word from Old High German kuti