Over the centuries of English monarchs, there's never been a King Allan.
Allan Evans wants to change that. He says he has a legitimate claim to the throne and took out an ad in The Times of London to prove it.
To clarify, Evans is from Colorado. That didn't stop him from taking out an ad in which he claimed he was a "direct descendant" of the founder of the Kingdom of Wales, which gives him a claim to the throne.
Let's break this down a bit
First of all, there's no reference of the Kingdom of Wales ever being known as the Kingdom of Gondor, which Evans claims in the first paragraph. Gondor is the name of a fictional kingdom in "The Lord of the Rings" by J.R.R. Tolkien, which Evans' ad references in italics at the bottom ("for the Legend was not a myth but was indeed true, and more than a mere Tolkien story").
Also, the "last known King of Wales" was not John Evans Sr., but Gruffudd ap Llywelyn, according to History Today.
Back in 2012, 13WMAZ reported an Allan Evans from Colorado attempted to claim 400 acres in Twiggs County, England, calling it his ancestral homeland. It's not clear if the two are the same people.