Hi there
Mary Ann Northwood was the daughter of Joseph Northwood and Sarah Turner, married 5/3/1834 at St Peters in Wolverhampton. She seems to have been the only child of the couple. Joseph's sister Hannah married Stephen Underhill, another bargeman, and his other sister Tryphena married Richard Seymour (these are my GGGGrandparents). Sarah Harrison, sister of George, married John Seymour, eldest son of Richard and Tryphena.
Northwood family were from Wombourne.
Would love to hear from anyone else with canal boat ancestors.