The name Eldon is a boy's name of English origin meaning "sacred hill". Eldon and discussed in our forums with posts like "Olivia and Ian: A Brother - Sister Name Chain".
From the experts:
Popular in the 1920s, Eldon is a retro name that's waiting to be rediscovered. It has a similar placename/surname appeal to current Top 1000 names Alden and Holden. Several towns in the US and UK bear the name.