This street was called after Admiral John Jellicoe (1859 - 1935) who was the best-known British naval commander of World War One, and commanded the British fleet at the Battle of Jutland in 1916.
"The city surveyor reminded the committee that the council had disposed of a portion of ground at the Grove playing fields to the Irish Sailors and Soldiers Land Trust for the erection of houses, and stated that the trust had by letter dated 11th inst, advised that, with the permission of Lord Jellicoe, it had been decided to name the new street Jellicoe Avenue. The Parks Committee at its meeting on the 18th instant, offered no objection to the proposal. Approved". (23rd October 1934).