These are messages regarding Thomas and Susan.  They could possibly the parents of our Samuel P. HOLLIS

From Holly:  I came across someone with information that:

     Thomas Merriman/Merrimon HOLLIS born 1803 in SC.  He married Vilet  Susan __  (indeed one census listed her as Vilet S., the next one as Susan) and they had the following following children:  Samuel P. b. 1824 (MY HEART STOPPED!); Martha E. b. 1833; Jane b. 1837; Ellen b. 1839; David G. b. 1841; William b. 1846.

In 1850 census, these are the children listed, minus Samuel but we know he and Amanda JOHNS were already married at that time and they too are in the census a few pages away from Thomas M. and Vilet.

I find Thomas M. Hollis in the :
1850 Campbell County, Georgia census 10 District, p. 285, HH #845:
HOLLIS, Thomas M. 47 M Farmer SC
Vilet S. 45 F SC
Martha E. 17 F GA
Jane 13 F GA
Ellen 11 F GA
David G. 9 M GA
Wm. 4 M GA
Mary 35 F SC (don't know who this is... a sister perhaps?)

1860 Campbell County, Georgia, I find them on p. 464, HH #852, family #757:
HOLLIS, Thomas M. 60 M (seems to have a little trouble with his age)
Susan 55 F
Martha 25 F
Sarah 23 F (Sarah Jane)
Ellen 19 F
David 18 M
William 13 M
Mary 2 F

From Myrna:

Census Place: Coxes, Cobb, Georgia    
Source: FHL Film 1254141 National Archives Film T9-0141 P. 76D  Relation Sex Marr Race Age Birthplace

Susan V. HOLLICE       Self F W W 82 SC   Occ: Farming Fa: SC Mo: SC
Martha E. HOLLICE     Dau F S W 46 SC   Occ: Works On Farm Fa: NC Mo: SC
Elender HOLLICE         Dau F S W 38 GA   Occ: Works On Farm Fa: GA Mo: GA

This Susan V. is older than the one Holly found but the Daughters seem to fit.  Cobb County is directly above Fulton Co. and Campbell Co. merged with Fulton in 1932, so it seems likely that the family could have moved just that short distance. I have checked for all the other children in Georgia but no luck.