Under the alias of " Little Gentleman " or " Lt. G. " , she was one of Collin 's most important agents , so much so many believed that the Little Gentleman was a British intelligence officer . On the most important contributions Mernin made was identifying the homes of British intelligence officers who were later killed on Bloody Sunday , 21 November 1920 , by Collin 's squad . She aided Frank Saurin and Tom Cullen in identifying senior British agents in Dublin , typing secret reports for Collins in a room in 19 Clonliffe Road
Bloody Sunday
Bloody Sunday (1920)
Elizabeth Mernin