your family name probably is not from Scandinavian origin, but from Catalan origin.
The Catalan surname
Ivars (or
Ibars, there are two spellings) come from the place names Ivars d'Urgell and Ivars de Noguera, which come from the Basque root
ibar, "valley".
In France, as family name it has some spelling variants (Yvars, Ivars, Ibars, Ibarz, Ybars). (http://jeantosti.com/noms/y.htm)
Lumia
http://onomastica.mailcatala.com