[shelby research]Help with Isaac L. SHELBY in MO 1859

[Carol J. Gillmor]

I am not a SHELBY, but doing research for my daughter-in-law who is.  
She is from SE Missouri, descended from E. B. (Elip Barnes) SHELBY and 
Lucretia LATHAM or LATHEM.

I have found an Isaac L. SHELBY with a land patent in Stoddard County, 
MO signed 01/01/1859.  The land is in the same Township, Range, and 
Section (19) as some land owned by Abner Williams who was married to 
Elizabeth DOWDY.  She supposedly married the second time to "Lafayette" 
SHELBY, after Abner died.  She had 2 children with Abner, and 2 with the 
last name of SHELBY:  E. B. and Mary C.

There are also Land patents in 1841 in MO - Saline County - for 
Lafayette, James, and Richard P. SHELBY.

I'm having trouble locating any records on Isaac L. as the Stoddard 
County courthouse burned in 1864.
I have checked the census and found :
1850 - Elizabeth Dowdy living with father Matthew in Stoddard Co., MO
1860 - Elizabeth Shelby living with 4 children and no husband

I'm not sure where to go next.  I would appreciate any help or suggestions.

Thanks

Carol