Found these Brown's in the Clayton Cemetery:
Brown, Lucy Sophia 1824-1901 Lot 53
Sowards/Brown
Sowards, Sarah A. wife of G.W. Brown died April 1, 1888 age 49 years, 11 months and 15 days Lot 85
Brown, George W. March 23, 1831-April 21, 1900
Beach/Brown Lot 53
Beach, Mary E. eldest daughter of J.W. and L.S. Brown, born Cincinnati, Ohio, March 10, 1846 died Kenpton, Ill. Sept. 20, 1881
There was no Joshua listed.
I copied all the above not knowing if you wanted or needed them.
Hope this helps.
Florence Elliott