Definition: Adelbert1 was a name given to an early Christian group in the first century, named after a Hebrew city near the Jordan River where they gathered, but no one knows exactly who they were or why they met in that place. It seems like a bit of a mystery, so it's best not to make generalizations about it. The word itself was likely used as a name for something or someone special at the time, but there isn't much information available about its origin.