*Adrianopolis + Edirne -Llc 342 results 
 *Midilli + Lesbos -Llc 231 results 

 I think both case alternative names are used frequently. For me there is no problem and there is no reason for removing alternative names. 

 But if you want and if "Adrianople also had a significant Greek community in the past", as you said, you can put Greek: Ανδριανούπολις in histrical section of the article Edirne. Thank you.