I don't think it was Pomona Docks, Raggy. I think it was the Royal Pomona Palace and botanical gardens which became the Pomona Docks later. Apart from that, spot on. The palace and gardens had their heyday in the late 19th / early 20th century when the song was written. It was very popular in Manchester around then but was not really known as Lamora until the 1960s when the Yetties did their version.