You're in luck.... I found your Samuel on the 1860 Cass Co census:
1860 U. S. CENSUS:
Cass Co., Indiana; Miami Twp., Logansport P. O., page 635
Dwelling 863, Family 852:
Hugh Pennel 63 M Inn Keeper $50 $100 Penn
Rachel 49 F Ohio
Samuel W 20 M Clerk Ohio
Washington M 18 M Carpenter Apprentice Ohio
Ann wrote:
I am researching my Junkin ancestors. Does anyone have any information on Samuel Pennel
who was born in 1840 in Oh but later moved to Cass County IN. He was a widower who married
Sadie Junkin in 1887. He had a son Riley H. Pennel born in 1878. Samuel was a grocer and
PM in Cass Co. Any information on this family would be appreciated.