Henry Hanna (4 January 187121 March 1946) was an Irish barrister and later High Court judge, author, and photographer. Hanna was born to a Belfast-based Presbyterian merchant family on 4 January 1871. He was educated at the Belfast Royal Academy, Queen's University, and London University.
He became eye-witness to two key events, the Landing at Suvla Bay - about which he wrote his book "The Pals at Suvla Bay" - and the 1916 Easter Rising where we wrote diaries that have been described as a "litany of alarms and rumours circulating around the city, interspersed with his eyewitness accounts of events in his neighbourhood".
Provided by Wikipedia