Where does “sangue blu” come from?

sangue blu (Italian) comes from Italian blu, from French bleu, from Middle French bleu, from Old French blöe, from Latvian blāvus, from Old High German blāo, from Proto-West Germanic blāu, from Proto-Germanic blēwaz — yellow, blond, grey.

sangue blu (Italian): blue blood (heritage of nobility)

Definitions

  1. blue blood (heritage of nobility)

Ancestry of “sangue blu”, step by step

sangue blu traces back through 3 separate lines of ancestry.

via Italian blu

StepLanguageWordMeaning
1Italianblublue; the colour blue
2Frenchbleublue; very rare, underdone; the color blue
3Middle Frenchbleublue
4Old Frenchblöeblue
5Latvianblāvusaccusative plural masculine form of blāvs
6Old High Germanblāoblue, dark, grey; blue; yellow
7Proto-West Germanicblāublue
8Proto-Germanicblēwazblue; a dark bluish or grey colour, black
9Proto-Indo-Europeanbʰlēw-yellow, blond, grey

via Italian sangue

StepLanguageWordMeaning
1Italiansangueblood; family, bloodline; Only used in rosso...
2Late Latinsanguem
3Latinsanguinemaccusative singular of sanguis
4Latinsanguen
5Latinsan-
6Proto-Indo-Europeanh₁sh₂-én-
7Proto-Indo-Europeanh₁ésh₂r̥blood

via Spanish sangre azul

StepLanguageWordMeaning
1Spanishsangre azulblue blood
Every word from Proto-Indo-European bʰlēw-Every word from Proto-Germanic blēwazEvery word from Proto-West Germanic blāu