Clarksville has yet to put a famous person on the list
The Oklahoma lists hold names for 318 towns. The longest list of any town in Oklahoma belongs to Muskogee, with 62. Lawton has the second-longest list in Oklahoma, after Muskogee, with 61.
Who’s listed here
Famous people come from Wikidata (people whose birthplace is Clarksville), checked against each person’s English Wikipedia article and ranked by how many Wikipedia languages cover them. Nobody born in Clarksville has passed that check yet, and nobody born within 35 miles is listed.
From Wikidata and Wikipedia: people whose birthplace is Clarksville 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.