Swenson Swedish Immigration Research Center
"However I have hit a block in tracing my roots"
The main source of information in Swedish genealogy is the parish record, which are online, for a fee, on a few sites with scanned parish records. Since these names of yours are VERY common, and because there are a couple thousand parishes in Sweden, you need to find more clues.
You can also download a booklet with an overview of Swedish genealogy plus ideas on how to gather clues about where your ancestors may have lived in Sweden. This booklet is called "Tracing Your Swedish Ancestry" and was written by James E. Erickson and Nils William Olsson.
This link also talks about finding clues.
This tells the type of information usually needed to find someone in Swedish records.
Many of us have found the parish using the Swenson Swedish Immigration Research Center.