The 1910 census shows Lemuel born 1881 TN; Hannah born 1887 TN. Children were:Brownlow age 4 b TN; Dollie age 2 b TN.The census was taken the 20 April 1910 just before your Melvin Guss was born May 13, 1910.Lemuel is next door to Perry Harville and then several other male Harville's who I assume to be his brothers.Perry, married to Allie Shockley, is s/o Reuben W. Harville and Mary Unknown.Reuben is the s/o John Harville born 1785 & Agnes Ann 'Anna' Dalton
From the census notes of the late Michael Harwell Flanagan:
GRAINGER 1860 census 043 6/26RutledgeDistrict 3 HH #306/306John’s daughter Malvina is in Hawkins Co. w/ Stubblefield family David McAnally M 60 c.1800 TN Farmer$2,500 RE$800 Property Nancy (Taylor) McAnally F 60 c.1800 TN md. 4/22/1822 John Harvel M 40 c.1820 TN s/o John & Ann (Dalton) Harvell Insley Harvel M 12 c.1848 TN Pvt Co. I 59th TN Mtd Inf & Co. K 37th TN Inf Besly Stubblefield M 36 c.1824 TN CarpenterNo RE$250 Property Destanny Stubblefield M 35 c.1825 TN Nancy A. Stubblefield F 2 c.1858 TN Manerva Stibblefield F 1 c.1859 TN
As you can see the name has various spellings.I don't know the father of John who married Ann Dalton but I wouldn't be surprised if he isn't the "lost son" of Lemuel (especially since later generations in your family named a son Lemuel) Harwell and Lucretia (Bull or Tatum)who is John born about 1785 in VA.You might have to include this spelling in your research...Harwell.The old English sound for a 'W' was a 'V' sound thus the confusion when people started spelling their names the way they sounded.