Liv is an old name in Scandinavia, it's even found in the Norse sagas. I like it a lot and I don't think of it as a word name, although it's the Swedish word for life.
I know a Stellan, he's 30+ like me and we used to play when we were young. His name is a family name. I don't know any other Stellan, it's a rather unusual name. I like it, but wouldn't use it. In Sweden, apart from Stellan Skarsgård, there is also comedian Stellan Sundahl (1946 - 1999) and artist Stellan Mörner (1896 - 1979).