http://home.nextra.sk/hazlin/Historia/historia.htm
above is a site in Slovakian (can't read it either) about a Slovakian village called Hazlin (!). The interesting part is that on the site bottom there are listed how the city was referred to in history. It was first mentioned in 1415 as Heuslingh and later one as Esleng, Hazlyngh, Haslin and finally Hazlin. it all looks very much like Hesling and Hazelinus. another connection i guess. i hope anyone can help me translate the site to see if it contains more useful information (like how it got its name or alike)