Thank you for you information.I have identified 10 different Brewer land patents most in 1837, but a few at a later date.I will summarize the information here, although I am sure you have also looked at this information, available on the BLM Website
Name County Date Doc. # Sec. TWP Rng. Aliquot Acres Other Patentees
Brewer George W. Sumter 5-15-1837 2307 8 18N 1W E1/2SE 79.98 Lake Joseph
Brewer George W. Sumter 3-15-1837 2448 21 18N 1W NW 159.79 Brewer Thomas I.
Brewer Matthew H. Sumter 5-15-1837 2309 21 18N 1W W1/2SW 79.89
Brewer George W. Sumter 5-15-1837 2308 21 18N 1W E1/2SW 79.89
Brewer William Choctaw 3-15-1837 2311 13 13N 2W N1/2NW 80.42 Needham Benjamin
Brewer William Choctaw 8-1-1837 10951 14 13N 3W NENE 40.07
Brewer William Choctaw 11-2-1837 11967 14 13N 3W NESW 40.08
Brewer William Sumter 3-15-1837 2620 8 19N 2W W1/2SE 79.77
Brewer Wyche Sumter 5-15-1837 9631 13 19-N 2W SWNW 40.03
Brewer Seaborn Sumter 3-15-1837 3604 23 19N 2W E1/2SE 79.86 Coffman Samuel H.
Brewer Seaborn Sumter 3-15-1837 3603 24 19N 2W W1/2SW 79.81 Coffman Samuel H.
Brewer Jackson Sumter 3-15-1837 3605 25 19N 2W NW 159.9 Harper George W.
Brewer William Sumter 3-15-1837 3112 26 19N 2W N1/2NE 79.56 Coffman Samuel H.
Brewer Matthew H. Sumter 5-15-1837 2310 33 19N 2W NESE 40
Brewer Matthew H. Sumter 4-16-1839 12430 33 19N 2W SESE 39.25
Brewer William Sumter 3-15-1837 2313 18 20N 2W E1/2SW 80.05 Brown Lewis S.
Brewer John M. Sumter 3-15-1837 2621 31 20N 2W E1/2SE 79.65
Brewer William Sumter 3-15-1837 2622 31 20N 2W W1/2NW 79.65
Brewer Eleazar Sumter 3-20-1837 11704 30 21N 3W E1/2NW 80.15 Young Samuel
Brewer Henry Sumter 3-20-1837 11397 30 21N 3W E1/2SW 80.15
Brewer Jeremiah Sumter 3-20-1837 11703 30 21N 3W W1/2NE 80.15 Young Samuel
Brewer Nathan Sumter 3-30-1837 11395 30 21N 3W W1/2SW 80.15
Brewer William Sumter 3-15-1837 3114 11 19N 4W E1/2NE 80.24
Brewer George W. Marengo 5-15-1837 9622 13 16N 2E E1/2NW 120.57
Brewer Henry Bibb 3-20-1837 11396 20 23N 8E E1/2SW 79.61
Brewer Nathan Bibb 9-20-1839 18515 19 23N 8E NESE 39.94
Brewer Nathan Bibb 3-30-1837 14249 19 23N 8E SENE 39.94
I have arranged the table to show the land, on the assumption this could tell us something about the family groups.These data show Eleazar Brewer and Jeremiah Brewer buying their land in association with Samuel Young.As you noted, Henry and Nathan Brewer also bought land in the same section (30, 21N, 3W) but also bought land in Bibb County.
Clearly, it is possible there is more than one William BREWER, although only one was living in the area in 1840.However, the name I find most interesting is Seaborn BREWER, who is shown buying two tracts in association with Samuel H. COFFMAN, who also bought land with William BREWER.I have not found an adult Seaborn BREWER, but have found “Ceborn” BREWER, b. 1832, living in the household of Thomas G. BREWER, 42, and Matthew H. BREWER, 76.The land deeds suggest that 1850 William BREWER of Sumter Co., AL, and Seaborn BREWER had some sort of connection, while the appearance of the unusual name Seaborn in the census for a grandson of Matthew BREWER, combined with the land purchases of Matthew H. BREWER suggests some sort of connection.Perhaps the William BREWER listed as the father of Thomas C. and Robert W. BREWER is the 1911 letter of Willis BREWER was still alive.I have not examined the deed books of Sumter County, AL.
My identification of 1850 William Brewer of Sumter Co., AL,as the man born in NC 1774, moved to Georgia by 1798, to Conecuh Co., AL, by 1818, and to Sumter Co., AL, by 1840 is based mostly on the census, the known marriage of Wyche BREWER and Flora McPHERSON, and the association of William BREWER and William McPHERSON in the 1820 Census.All of this, of course, is indirect.
I have also seen data suggesting that the Bibb Co., AL, Brewer family were descended from Burrell3 Brewer, the youngest son of Burwell2 Brewer and Elizabeth (PATRICK) BREWER, son of 1744 George1 BREWER of Brunswick Co., VA, and Alice (BURWELL) BREWER.Unfortunately, I cannot give you the detailed reference, as it was not the family I was actively tracking, but believe it was in a history of Bibb County collected and published locally about 10 years ago.
I have been trying to understand what is known about the descendants of 1744 George BREWER of Brunswick Co., VA as they seem to have been the folks who moved to NC and to GA, which matches what I can say about the migration pattern of 1850 William BREWER of Sumter Co., AL, and might explain the naming of the eldest (so far) son, 1877 Wyche BREWER of Scott Co., MS.