Where does “Turtchie” come from?

Turtchie (Norman) comes from Medieval Latin Turquia, from Latin Turcus, from Greek Τοῦρκος, from Persian ترک, from Middle Persian twlk', from Old Turkic 𐱅𐰇𐰼𐰜, from Proto-Turkic *tür(ü)k — Turk, Turkic people.