His Find a Grave memorial indicates he served in the CS army, however, I cannot locate him on any roster

Name: Jos H Houseworth
Age in 1860: 26
Birth Year: abt 1834
Birthplace: Virginia
Home in 1860: Orange, Virginia
Gender: Male
Value of real estate: $2500 Per. Estate $10,000
Household Members:
Name Age
Jos H Houseworth 26 Merchant
Henriete M Houseworth 28

……………

Name: Joseph H. Houseworth
Gender: Male
Marital Status: Single
Age: 23
Birth Date: 1834
Birth Place: Orange Co., VA.
Marriage Date: 12 Mar 1857
Marriage Place: Orange, Virginia
Father: V. M. Houseworth
Mother: S. W. Houseworth
Spouse: Harriett M. Brent
FHL Film Number: 33031
Reference ID: P175

……………

Joseph Horace Houseworth

Birth: Aug. 29, 1834
Orange County
Virginia, USA
Death: Mar. 13, 1896
Baltimore City
Maryland, USA

CSA

Burial:
Graham Cemetery
Orange
Orange County
Virginia, USA

Created by: Scott Hutchison
Record added: Nov 15, 2004
Find A Grave Memorial# 9905566
Joseph Horace Houseworth

Ex-Mayor Joseph Houseworth, of Orange Courthouse, a genial and popular gentleman, who has been the agent of the P. F. & P. R. R. at that end of the line ever since the road was opened to the traveling public, died at Johns Hospkins Hospital, Baltimore, yesterday evening aged about 65 years.
His wife and son, Mr. Charles Houseworth, were at his beside at the time of his demise.
No one knew the deceased, but to love him and this announcement will grieve many hearts.
Added by: BigFrench
http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GRid=9905566