1966 Eurovision Winner Udo Jürgens

The winner was Austria with the song “Merci, Chérie” performed and composed by Udo Jürgens, and written by Jürgens and Thomas Hörbiger. (source)

Eurovision Song Contest Winner for 1966: Udo Jürgens

Song: Merci, Chérie

Winning Country: Austria

Performed in: Luxembourg