Where does “Immertreu” come from?

Immertreu (German) comes from German immer, from Middle Low German iemer, from Old High German iomer, from Old High German io, from Proto-West Germanic aiw, from Proto-Germanic aiwaz, from Proto-Indo-European h₂eyu-, from Proto-Indo-European h₂ey- — vital force, life, age, eternity; day, morning.

Ancestry of “Immertreu”, step by step

Immertreu traces back through two separate lines of ancestry.

via German immer

StepLanguageWordMeaning
1Germanimmeralways; to a greater degree over tiime, more and...
2Middle Low Germaniemer
3Old High Germaniomeralways
4Old High Germanioalways
5Proto-West Germanicaiwlong time, age, eternity; law
6Proto-Germanicaiwazlong time, age, eternity
7Proto-Indo-Europeanh₂eyu-vitality; eternal; vital force, life, long life,...
8Proto-Indo-Europeanh₂ey-vital force, life, age, eternity; day, morning

via German treu

StepLanguageWordMeaning
1Germantreuloyal; faithful; true
2Middle High Germantriuweloyalty, reliability, truthfulness
3Old High Germantriuwafaithfulness, loyalty, truth; contract, pact,...
4Proto-West Germanictreuwufidelity, pledge
5Proto-Germanictrewwōfidelity, pledge
6Proto-Indo-Europeandrewo-
Every word from Proto-Indo-European h₂ey-Every word from Proto-Indo-European h₂eyu-Every word from Proto-Germanic aiwaz