Just came across another Irish unit that was at Pickett's Charge. Company B of the 8th Ohio, along with the rest of the regiment, attacked the left flanks of Brockenbrough, Pettigrew, and Trimble's brigades as they advanced. From the TMF Downes' regimental history:
"The Hibernian Guards, an Irish Social club, enlisted as a group for three months and was sworn in On Apr. 29, 1861 as Co. B 8th Ohio Volunteers. While in Cleveland, Co. B drilled at Camp Taylor which was at the corner of Kinsman Ave. and Hudson St. (now E. 105 St.). In June of 1861 the entire regiment was assembled at Camp Dennison, Cincinnati. On the 24th of July 1861 the 3 month men were reorganized and sworn in for 3 years service."
Downes' description of the unit's experience at Gettysburg (in the same link above) is well worth reading too.
Here's the regiment's monument:
http://www.gettysburg.stonesentinels.com/OH/8OH.php
"The Hibernian Guards, an Irish Social club, enlisted as a group for three months and was sworn in On Apr. 29, 1861 as Co. B 8th Ohio Volunteers. While in Cleveland, Co. B drilled at Camp Taylor which was at the corner of Kinsman Ave. and Hudson St. (now E. 105 St.). In June of 1861 the entire regiment was assembled at Camp Dennison, Cincinnati. On the 24th of July 1861 the 3 month men were reorganized and sworn in for 3 years service."
Downes' description of the unit's experience at Gettysburg (in the same link above) is well worth reading too.
Here's the regiment's monument:
http://www.gettysburg.stonesentinels.com/OH/8OH.php