"valon" as a word means "to seethe" in Albanian:
http://www.websters-online-dictionary.org/translation/valon
Many Albanian names are common Albanian words at the same time - or vica-versa, depending on the viewpoint - but I cannot say whether this is the case here as well i.e whether the common Albanian word "valon" is identical with the name.
I somehow doubt it.
Rene
www.AboutNames.ch