The cousin bait in this case was a name and an exhibit in a museum in Abilene Kansas, far from my home in Vermont. I saw in Abilene the name of A B Seelye, of Illinois and Kansas, and his patent medicines of the late 1800s. As the family genealogist, I knew about a Seelye family, who came from the same towns in CT that my family did, and then came to (where else) Pownal, Bennington County Vermont, where my mother's family has lived since before the Revolution. I have Seelye cousins, and thought the spelling of the name was too unique not to be the same one. You can also find it as Cilley. Sealey, etc, but in Pownal it is Seelye.
I didn't have to look far to learn more about Alfred Barnes Seelye, as he is here on wikitree as Seelye-106. His paternal tree is also visible, taking only one generation to show the connection to Bennington County, Vermont. I suspect they were really from Pownal, and will try to get some documentation to verify. SInce they are also in Williamstown MA, which is contiguous to Pownal, it is a good bet. Cousins from Pownal may move away, and 150 years may go by, but we still find them.