This may be Solomon STROUP, but I need to confirm…

The One Hundredth Pennsylvania Volunteers was recruited in July and August, 1861, in the southwestern counties of the State. From the fact that it was made up principally of descendants of Scotch-Irish Covenanters and of the Round Heads of the English Revolution, it became known as the 'Round Head Regiment.'  It was sworn into the United States service at Camp Wilkins, Pittsburg, August 31, 1861, and soon after formally organzied with the following officers: Daniel LEASURE, colonel; James ARMSTRONG, lieutenant-colonel; David...

...A. LECKEY, major; Rev. Albert Audley BROWNE, chaplain; H.H. LESLIE, quartermaster; Horace LUDINGTON, surgeon; Abraham MAAS, assistant surgeon; and George LEASURE, adjutant.

On September 2, 1861, the regiment was ordered to Washington, D.C., where Company L was transferred to the One Hundred and Fifth regiment. The Round Heads were then brigaded with the Eighth Michigan and the Fiftieth Pennsylvania, and Colonel LEASURE made brigade commander. The brigade as thus formed was soon after strengthened by the addition of the Seventy-ninth New York Highlanders, and was ordered into active service as a part of the land and naval forces sent against Port Royal, South Carolina.

Its first engagements were the battles of Port Royal, November 7, 1861, and of Port Royal Ferry, January 1, 1862. In June the regiment formed a part of the forces that made the unsuccessful attempt to capture Charleston. The Round Heads were ordered to Virginia in July, 1862, and subsequently was attached to the Ninth corps. While with the Army of the Potomac the regiment participated in the following battles: Second Bull Run, Chantilly, South Mountain, Antietam and Fredericksburg. In March, 1863, the Round Heads were transferred to the Department of the Ohio, and in the following June were ordered to Vicksburg, in the siege and capture of which they participated. While in the western army the regiment also participated in the battles of Jackson, Mississippi; Blue Spring, Campbell Station and the siege of Knoxville, in Tennessee.

January 1, 1864, all of the regiment except twenty-seven men re-enlisted for a second term of three years, and were granted a veteran furlough. Upon return to active service, the Round Heads were again assigned to the Army of the Potomac, and participated in the following battles: Wilderness, Spottsylvania Court House, North Anna, Cold Harbor, Petersburg, Mine Explosion, Weldon Railroad, Poplar Grove Church, Hatcher's Run, Fort Steadman and the final assault on Petersburg.

The history of the regiment is a record of valiant service and brilliant achievement, officers and men alike distinguishing themselves by great personal bravery. After serving with honor fo nearly four years, the regiment was mustered out of service July 24, 1865.

Company C of this regiment was recruited in Butler county by Capt. James E. CORNELIUS.  Its roster is as follows:

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