

As this map indicates, there was a lot of Norse ancestry in Lancashire a long time ago. It is likely that Wildman ancestors were included in this gene pool. (Jump top related projects from the links included there)
Many, if not all of the Wildmans of North Yorkshire exhibit language and word-linked traits that link them to Old Norse influences if not genetic roots too.
In ancient times Wildmans lives in remote areas and farmed and worked on a subsistence level. They lived in laithe-houses, that is, dwellings with other farm buildings, including a barn, as a single structural unit, with separate entrances for human and livestock areas. The Ribble Valley and the Lune were common places to find large populations of Wildmans in the 16th and 17th centuries, not that they weren't elsewhere.