Gearharts, Garhearts

Hi everyone,
I am looking for any info about Henry A. Garheart, my great grandfather.
He was born in 1844 in Carroll Co., Md., died 1924 in Baltimore.
I cannot find anything about him before the Civil War, 1850 and 1860
Census readings which might have parents or siblings listed are
Nowhere to be found. Miles and Benjamin Gearhart are possible
Relatives, but nothing again to be found. Has anyone possibly researched any of these names?
Peggy