Thomas Riggs Jr. is the best known, with articles in 6 languages. The only other name is the American ambassador Avra M. Warren. Over the border in Columbia, 25 names are on record, led by Jack Douglass. Born in 1873, Thomas Riggs Jr. is the first name on record, and Avra M. Warren, born in 1893, the most recent.
From Wikidata and Wikipedia: people whose birthplace is Ilchester and whose English Wikipedia article agrees, ranked by how many Wikipedia languages cover each person. People known mainly for crimes, and adult performers, aren’t listed. “The usual town” = everyone born in the towns gathered so far.
Photo credits (7)
Thomas Riggs Jr.: National Photo Company, Public domain, Wikimedia Commons