At first I thought the verse: "To a fine young man that drives a van for Chapman Son & Co.” meant it had to be a 20th Century song, but then I looked up Chapman Son and Co. and found out they have been around since the 18th c. I also looked up the origin of "Van" and found out in the late 19th century, when it was written, Van was a common shortening of "Caravan," which also meant "covered horse-drawn wagon" dates from the early 19th century.