Question: Did Gertjan Vlieghe and Béla Kéler have the same nationality?
Sentence (from "Béla Kéler"): He was born on 13 February 1820 in City of Bártfa, Sáros County, Kingdom of Hungary, Imperial- Royal Austria( present day Bardejov, Slovakia), and died on 20 November 1882 in Wiesbaden, Germany( that time German Empire).
Relevant evidence: No