In 1901 Paul was living in house 124, Oldcastle, Oldcastle, Co. Meath with his parents and 5 siblings, Helen, Catherine, James, Edward and Frederick.
In 1911 Paul was living in house 108, Oldcastle, Oldcastle, Co. Meath with his father and 3 siblings, Katherine, James and Frederick. His occupation is described as a Bank Clerk.
Paul would have joined the Belfast Banking Company around 1911 and worked in Enniskillen and Markets branches.
Paul enlisted into the 12th Royal Inniskilling Fusiliers and attained the rank of 2nd Lieutenant.
His first theatre of war is recorded as France from 4th March 1917.
The Belfast Banking Company 'Roll of Honour' booklet records Picken as having been 'previously wounded' with his last known address 'in France'.
As an officer Paul had to apply for his war service medals. He was awarded the British War Medal and the Victory Medal.
John Eadie, a descendant of Picken has provided the following additional information:
"Hi! Paul Hartley Picken married my great aunt Louie Kells (aged 17 in 1911) in Oldcastle, Co. Meath, Ireland and resided in Winnipeg, Manitoba, Canada for many years, working as an Accountant. He died on the 21st June 1970 in Deer Lodge Hospital, in Winnipeg and is buried in Brookside Cemetery in Winnipeg in a military grave."