Thelis
Could not find Thelem in Logeion dictionaries.
Thelem Proper-name noun: feminine accusative singular of Thelis
Thĕlis, is, v. Thetis.
Thelis, s. Thetis.
Thĕlis, f. , arch. pour Thetis : Varro L. 7, 87 ; R. 3, 9, 19 ; Enn. Scen. 232.