Where does “Troiā̆n” come from?

Troiā̆n (Middle English) comes from Old English Trōiān, from Latin Trōiānus, from Latin Trōia, from Ancient Greek Τροία — Troy.

Ancestry of “Troiā̆n”, step by step

Step	Language	Word	Meaning
1	Old English	Trōiān	—
2	Latin	Trōiānus	—
3	Latin	Trōia	—
4	Ancient Greek	Τροία	Troy

Troiā̆n — Etymology, Origin & Word History | Etymology Explorer