Fleming C Maupin is listed on the 1850 census for East Fork,Jo Davies C Illinois page 218 line 109.. His son, John conlee Maupin is listed in the 1880 census for Eureka,Eureka Co Nevada, page 20 (81-16?) on June 7th 1880 house 211, family 194. I think you will see his name as Mauper Pauline