I was able to find some info. on your Robert and Mary Helen.

1930 Campbell TN
Robert 54, married at age 24
Helen 50 married at age 21,
Oscar 25 (rr laborer), Will 21, Edison 18, Lizzie M 15, Verlin 14
Addy: Powder Mill Hollow Road

1920 Campbell TN
Robert 44, Mary 39, ellen 16, Oscar 14, Willie 11, Edison 7, Lizzie 5, Verlin 4

1910 Campbell TN
Robert F. Brown 35, Mary h 30, Lossie E(Ellen) 7, Oscar 4, William S. 1

TN Death Record
Mary HelenJones Brown
born 3/03/1880 la Follette, Campbell Co. TN
age 59 died may 04 1839 in la Follette, Campbell TN
buried in la Follette at the Jones Cemetery
she was married. housewife
father: John A. Jones born in Campbell, Tn
mother: Mary c. Pierce born in Campbell TN
spouse: Robert Brown

TN Marriage Record
Robert Brown and M.H. Jones married 11/07/1901 in Campbell TN

1880 Campbell Co. TN
JONES
John A. 33 1847 AL
Mary 31
Martha E. 10, William H 7, ellen C 5, James F 3, *Mary H 7/12
William Jones 74 1806-va father
Susan Jones 83 mother

TN Marriage Records
William Jones and Susanah Richardson married 10/24/1860 Campbell TN
(this was a second marriage for Susan)

1870 Campbell TN
JONES
William 64 1806 tn
Susan 72 1798 tn
John 15, William 12
(assuming thse are grandchildren)

1850 Campbell TN
susan Richardson 54
Hester A. Richardson 15

1840 Campbell TN
Susannah richardson

1830 Aaron Richardson

War of 1812 Records
Aaron Richardson
Bunch's Regiment
1814
TN Militia
Private

Aaron Richardson
born 1790-1800 TN
died 1853 TN
parents: Amos Richardson 1762 VA d. 1853- Campbell TN and Elizabeth Wilhite b. 1769 NC
spouse: Susannah Shetters......


this is prob. not what you were looking for, too far back on Susan and family... but strangely, more info. found in the past than found more in present.