Cassel has no famous person on record yet
Modesto has the most of any town in California: 65. After Modesto, the next longest list in California is Alameda’s, with 64. Famous people are on record for 550 of the towns in California.
Who’s listed here
Famous people come from Wikidata (people whose birthplace is Cassel), checked against each person’s English Wikipedia article and ranked by how many Wikipedia languages cover them. Nobody born in Cassel has passed that check yet, and nobody born within 35 miles is listed.
From Wikidata and Wikipedia: people whose birthplace is Cassel 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.