Coincidence of Names in Carthage, Illinois and a DNA Match

I did a search on Ebay for anything whose description mentioned "Carthage, Illinois". I found an envelope, postmarked in 1891, with a printed return address of a business named "Wm. Dugdale, Dealer in Boots and Shoes, Carthage, Illinois".

This surname of Dugdale sounded familiar. I recalled seeing this surname in my Family Tree DNA matches. I looked and verified I do have a DNA match with the surname of Dugdale. This match does not have a family tree posted on Family Search.