Parents for Roswell Bradley, b. 1812, m. Mary A. Bowen 1836 - I've hit a wall!!

I traced my Bradleys back to New Haven, CT as far as Roswell Bradley (b. 1812) who married Mary A. Bowen in 1836. They migrated to LaSalle County, Illinois sometime between 1850-60. He was my G-G-G-Grandfather. I am stuck here because on the 1820 census there are two Bradley heads of household--both Samuel and Roswell--on the same page right next to each other and both had male children between the ages of 5-9. Does anyone have my Roswell in their line?