In the 18 hundreds the Swedish king posted a vish, that not every Swede was named Andersson, Pettersson, Johansson... The patrikymic (spelling?) name tradition since a LONG time back, giving the son of Johan the name Johans son (Johansson) and the daughters of Johan the name Johansdotter. These are not real surnames, more of a denotation that this person was Eva, Johans daughter...
The middle and end of 18 hundreds saw a movement that in Sweden that today is called Nationalromantiken (see
http://en.wikipedia.org/wiki/Romantic_nationalism ). One of the trends were to love nature... Not difficult to do in Sweden I can assure you. So, what did a lot of Swedes do? They got a surname, that often (not always) had two parts, and those two part were very often somethig to do with nature. Hedberg (hed=moore, berg=mountain), Sjöström (Sjö=lake, ström= stream), Lindgren (Lind=Tilia cordata (Small-leaved Lime, occasionally Small-leaved Linden or Little-leaf Linden), gren=branch), Lundberg (Lund=grove of trees, berg=mountain) etc.
So yes your ancestors could come from a place called Lund (city in Skania) or as my husbands relatives from the village Lunde in Medelpad (thus creating the surname Lundstdedt, where the part Lund meant that they lived in Lunde, and the part stedt ment they lived in the military stedding in Lunde...).
It is therefore highly unlikely that the Lund part in the name was anything to do with religion and much more part to do with that they loved forest groves... And Quist, qvist, qwist, kvist... that means a tree branch thus making it likely the name alliterates to a forest or a smaller grove.
Just as a parenthesis, when my mothers fathers father took the name Hedberg, his brother took the name Lindberg, showing that even brothers could choose completely different. They were born Johansson...