Andrew Irwin listed in the names of the Officers of the Pennsylvania Line of the Late Federal Army, Friday, April 22, 1791 - Pennsylvania Archives, Colonial Records, Series 6, Volume IV, Military Abstracts from Executive Minutes 1790-1817
Andrew Irwin listed in return of Captain Hurds Company in the Second Battalion of Lancaster County Militia for Fall Muster Days Commanded by Major Alex Scott, Lieut. Col. Wilder Bevins Regiment under Captain William Heard command.
Private Andrew Irwin is listed in Receipt Roll of a Company of Infantry under the command of Captain James McCoy Commanded by Col. James Hossack of the 134th Regiment Pennsylvania Militia doing duty at Erie by Order of Major General Mead commencing 2 January and ending 11 February 1815. Andrew served 1 month and 11 days and he was paid at rate of $10. month. The amount pay he received was $13.66.
Private Andrew Irwin listed in Receipt Roll of a company under the command of Captain James McCoy commanded by Lt. Col. Thomas Hossack of the 134th Regiment, 1st Brigade, 16th Division of Pennsylvania Militia doing Duty by order of Major General David Mead, July 25, 1813. Com. service on 27 July, 1813 and expired service on 11 August 1813, number of days 16 and pay per month was $10. and amount of pay $5.33.