Found one, five to go. Interesting that when you use different search engines, you can find different things on different web sites, found the following via Google Chrome - JIM T:

"This Company (Franklin Sharpshooters) was one of the six companies of the 8th Louisiana Infantry that were ordered out of Camp Pickens, to Bull Run on the 17th and held the position at Mitchell’s ford during the engagements of the 18th and 21st of July, 1861. Returned to Camp Pickens on the 23rd of the same month."

NOTE: Four companies remained at Camp Pickens and the remaining six companies were assigned to the rear at Mitchell's Ford as a reserve guarding supplies on 21 July, 1861. On 25 July 1861, the Army of the Potomac was reorganised and the 8th Louisiana Infantry was assigned to the Eighth Brigade, First Corps, Army of the Potomac.

SOURCES
A Guide to Louisiana Confederate Military Units 1861–1865, by Arthur W Bergeron, Jr.
Records of Company E, Eighth Louisiana Infantry, The Franklin Sharpshooters, Housed in the National Archives