Where does “Wigheard” come from?

Wigheard (Old English) comes 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 “Wigheard”, step by step

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

Every word from Proto-Turkic *keŕ- →