Hi the Cissy you are referring to i think is my aunt real name Bridget Mary who died 1960 in the USA B:13 May 1900 Co. Monaghan, Ireland D:19 Dec 1960 Washington Heights, Manhattan, New York City, New York, USA
I have posted in the past sharing her daughter's name Mary
Her father was a policeman indeed and at the time was stationed in Newbliss. They later moved to Tydavnet in Monaghan, where John Died of the Spanish Flu in 1918.