Liam is a variant of this slightly longer name that's from Old German
I'd say the Swedish 
case is just a variant on the longstanding Western/Central ... Well, a Swedish 
Wikipedia article on the origin of names says that Oscar is from... [DOC] [TLE] The use of personal names - Roger Darlington's World [PAR] Dec 18, 2015 ... English names are mostly opaque, that is the 'meaning' is not obvious ...