I'm sorry, I don't believe the two are the same. (where is/was Moravia?) The Boleslawiec currently in Poland was, until 1945, Bunzlau, Schlesien (Silesia), Germany. Although there was some (slight) Slovak influence from around 1500, it was known as Bunzlau, and was also the Kreisstadt (county seat) for "Kreis Bunzlau" (the surrounding area). My family (German) was from that area, specifically Bunzlau, Nieder Schoenfeld, Alt Oels, and Buchwald. Best wishes!