Where does “Ertegün” come from?

Ertegün (Turkish) comes from Turkish gün, from Ottoman Turkish گون, from Proto-Turkic gün — sun, day; day, sun.

Ancestry of “Ertegün”, step by step

StepLanguageWordMeaning
1Turkishgünsun; daytime; daylight
2Ottoman Turkishگونday; sun; hide, leather
3Proto-Turkicgünsun, day; day, sun
Every word from Proto-Turkic gün →Every word from Ottoman Turkish گون →Every word from Turkish gün →