Where does “Tetoiu” come from?

Tetoiu (English) comes from Romanian Tetoiu, from Romanian -oiu, from Romanian -oi, from Latin -oneus.

Ancestry of “Tetoiu”, step by step

Step	Language	Word	Meaning
1	Romanian	Tetoiu	—
2	Romanian	-oiu	suffix forming many Romanian surnames
3	Romanian	-oi	augmentative suffix, used to indicate a larger...
4	Latin	-oneus	—