WELS stands for: Wisconsin Evangelical Lutheran Synod

A Lutheran church with it's origins in the Midwest of the United States. It started around 150 years ago, and has since spread the teachings of Jesus Christ around the world.

To get the authoritative answer for any of your questions though, please visit: www.wels.net

For a 'third party' description of the WELS, check out the Wikipedia entry: WELS in Wikipedia