Here is some additional information that may help you on Francis Marion Smitherman.
1850 US Bibb Co., Alabama Census page 51B house no 684/684 Enoch Latham Jr.26 MFarmer600AlCan't read/write Elizabeth18 FAL John W6 MAL Thos W4 MAL Marion Smitherman 21 MAL Can't read/write
1860 US Lauderdale Co., MS page 44 house no 290/278 Lauderdale Station F M Smitherman30 MCarpenter1000/500TN Martha19 FDomestic BusMS Arabella1 FMS Wm Latham22 MAL J Barn35 MCarpenterAL C Smotherman19 M Farm LaborerAL
NOTES: 1850 US Bibb Co., AL. Census. ENOCH LATHAM JR. FACT: Enoch Latham Jr. married Elizabeth Smitherman on 24 July 1844 Bibb Co., AL. Elizabeth was the daughter of THOMAS SMITHERMAN JR b. 1788 NC and 1st wife ELIZABETH LOWDERMILK.
FACT: Enoch Latham Jr. married again on 13 October 1853 in Bibb Co., AL. to PHEREBY ELIZABETH SMITHERMAN. She was the daughter of James Smitherman and Margaret Latham.
POSSIBILITY 1840 US Bibb Co., Al. Census p. 103 Twp. L. Samuel Smitherman 1 male under 5 1 male 5-10 2 males 10-15 [one of these is Rolley b. 1826 TN.] 1 male 15-20 1 male 50-60 (this we know is Samuel W b. 1789 NC) 1 female 15-20 1 female 30-40 [this is 1st wife Sarah Lowdermilk]
We know that Samuel W's children: WYATT married Rachel Davis on 5 Jan 1837 in Bibb Co., AL. so he wouldn't be home in 1840, daughter KEZIAH married William Latham Jr. on 12 July 1838 so she wouldn't be at home, daughter Hannah married Ransom Whatley on 14 Jan. 1840 so she wouldn't be at home in 1840.
Rolley married Mary Fitts 21 Oct. 1852 so he would be home. Granderson married Bodecia Ann Davis on 7 July 1853. Stephen G. married Perlency S E Lawrence on 26 May 1853
The other children in the census record are all unknown. There is no estate for Samuel W Smitherman. There is however an estate for his father in law John Harrison Lowdermilk in NC which lists all of his children and the children of his brother Thomas Smitherman Jr. b. 1788. As yet we have not gone through all of the Lowdermilk loose papers to determine who all of the children of BOTH Samuel W & Thomas were. It is said to be a rather large file.
NOTE: Samuel W Smitherman b. 1789 NC was the son of THOMAS SMITHERMAN who died 1812 NC and Mother is unknown. Samuel W Smitherman came to Alabama from North Carolina by way of Tennessee. In looking at the census records his son Rolley is listed in most as having been born in Tennessee as is his youngest son [by Sarah Lowdermilk] Stephen G Smitherman. He had a daughter Keziah Smitherman b. ca 1820 who married William Latham Jr. is only found in one census record and she was listed as having been born in Alabama which I don't believe is correct. William Latham Jr. was the son of Catherine Smitherman and William Latham Sr.
NOTE: Thomas Smitherman Jr. b. 1788 NC was the son of THOMAS SMITHERMAN who died 1812 NC and Mother is unknown. NOTE: Thomas Smitherman Jr. and wife Elizabeth Lowdermilk came to ALabama from North Carolina by way of Georgia. In 1840 they were listed in the Cherokee County, Georgia census.
NOTE: Both Samuel W Smitherman b. 1789 and Thomas Smitherman Jr. b. 1788 NC married SISTERS. Samuel W. married SARAH LOWDERMILK, and Thomas married ELIZABETH LOWDERMILK. Please do not get confused if you are looking at family trees on the website and you see where someone has Samuel W's wife listed as Sarah Elizabeth because that is incorrect. Sarah Lowdermilk was one person and Elizabeth was her sister and they both married Smitehrman brothers. Someone not knowing this just collapsed the two and it got copied by others before the error was caught.
I have not determined who the C Smotherman age 19 b. Alabama in the 1860 household of Francis Marion Smitehrman was, nor have I deteremine who the William Latham age 22 belonged to. There are many William Latham's even in the Smitherman family.
Note however that in 1850 Francis Marion Smitherman was listed as born in Alabama.