Where does “Wyatt” come from?

Wyatt (English) comes from Old English Wigheard, from Old English heard, from Proto-West Germanic hard(ī), from Proto-Germanic harduz, from Proto-Indo-European kert-, from Proto-Turkic *keŕ-.

Ancestry of “Wyatt”, step by step

Step	Language	Word	Meaning
1	Old English	Wigheard	—
2	Old English	heard	hard, harsh, austere, severe, rigorous, stern,...
3	Proto-West Germanic	hard(ī)	hard
4	Proto-Germanic	harduz	hard; brave
5	Proto-Indo-European	kert-	times; to weave, twist together; time
6	Proto-Turkic	*keŕ-	—

Every word from Proto-Turkic *keŕ- →