Paddy Rossmore was born into an old Monaghan land-owning family in 1931. After attending Cambridge, Rossmore was introduced to the Irish Georgian Society by Desmond FitzGerald, Knight of Glin. Rossmore and Mariga Guinness, along with FitzGerald, travelled Ireland with a camera. Despite his amateur status, Rossmore’s photographs were sought after by books and periodicals such as Country Life, with his collection eventually being placed in the Irish Architectural Archive.