At an earlier site, the ferry was mentioned in the Proceedings in the Court of the Star Chamber in the Reigns of Henry VII and Henry VIII after a dispute between a new competitor and the existing ferry, which was run by St Augustine's Abbey. Presumably the crossing was used to get to and from the abbey property at Abbots Pool, which I've actually swum in, from the Abbey, now Bristol Cathedral.
GPS Coordinates:
51.44787, -2.62545
Location: Hotwells