Ramos from Mascota, Jalisco

Hello, this is my 1st post. Does anyone know or have any Ramos surnames from Mascota, Jalisco in their lines? My 3rd Great Grandfather was Sebastian Ramos who married Maria Nabor Orosco from Arandas. Sebastian's father was Cristobol Ramos who was married to Maria Cenobia Tobar from San Miguel de Allende, Guanajuato. I cannot locate anything past Cristobol Ramos. I am estimating his birth to be around 1805.