Photograph album created by Lt. Col. M. O'Carroll Fitz-Simon, M.C. , who began his military career in Prince of Wales' Leinster Regiment, which was headquartered at Birr. The photographs document a peace-keeping mission the Leinsters undertook in Silesia (now part of Poland) from their departure at Dover on 31 May 1921, through Germany and to their destination of Oppeln (Opole in Poland today). Following the disbandment of the regiment in June 1922, Fitz-Simon joined the King's Own Regiment, Lancaster and the remaining photographs in the album depict scenes from missions in India and Burma. There is also a small number of photographs of people and houses in the Birr area including Whigsborough House, and the burnt out remains of Birr Barracks (following its destruction in the Civil War in July 1922).

File of diaries belonging to Theodora Trench.

From 1917 until 1919 Theodora volunteered as Chauffeuse with the Red Cross's Voluntary Aid Detachment. Throughout the early diaries she writes about her experiences resulting from this volunteer work and the responsibilities she was required to carry out. Examples of such entries include one she wrote on 18 January 1918 she writes 'Evacuation 4.45 am breakfast 4.15. Cleaned engine a little. 1.30 went to Richmond football match & Austin lunchtime.' Another example includes an entry from 12 January 1919 'On duty all day (night duty) inspection 11.30'.
Theodora also uses the diaries to record her her daily life. On 5 February 1921 she records attending a concert, 'Concert Albert Hall (Samson & Delilah)' and on 23 may 1922 she writes about going to the Chelsea Flower show 'S & I went to Chelsea Flower Show. Very hot & [humid] but beautiful flowers...'.