The story
- Proto-Indo-European*per-der.?
- Proto-Indo-European*pér
- Proto-Indo-European*pró
- Proto-Indo-European*pro-
- Proto-Italic*pro-
- Latinpro-
- Proto-Indo-European*(s)teg-
- Proto-Indo-European*(s)tégeti
- Proto-Italic*tegō
- Latintegō
- Latinprōtegere
- Frenchprotéger
- Frenchprotégé
- English todayprotégé
Borrowed from French protégé, past participle of protéger (“to protect”).
Etymology from Wiktionary, CC BY-SA 4.0.