You're welcome.
Your ancestor shortened his surname to PANKO from PANKOW / PANKIW.
Bol’shiye Chernokontsy, Charnokontse, Charnokon’tse Vel’k, Czarnokónce, Velikiye Chornokon’tsy populated place
48°58' N 26°02' E
E M U G
Ukraine
224.3 miles WSW of Kyyiv 50°26' N 30°31' E
http://igrek.amzp.pl/mapindex.php?cat=WIG100http://www.mapywig.org/m/WIG_maps/series/100K_300dpi/A53_B42...top of the map going from left to right CZARNOKONCE ML and CZARNOKONCE WLK.