The Whitney Research Group (WRG) is an informal group of individuals interested in the scholarly research of Whitney families around the world and throughout history. In our efforts to identify all Whitney families, we stumbled across the Widneys. We have created family group pages for several of them on our website, and encourage anyone to help to flesh them out and add in additional details. The website is a "wiki" which means that anyone can add or edit the pages.
Do we think that the Widneys are an offshoot of the Whitneys? We're not sure, but we do feel the need to document the Widneys as it helps us to mark off census records, etc. that they are found in so we know these records don't pertain to Whitneys.
Also, if there are any male descendants of Widneys, we would encourage you to join the Whitney DNA study project as this would probably allow us to see if there was any relationship between the Whitneys and Widneys.