Sir John Purser Griffith (5 October 1848 – 21 October 1938) was an Irish civil engineer.John Griffith was educated at Trinity College Dublin and gained a license in civil engineering in 1868. He served a two-year apprenticeship under Dr Bindon Blood Stoney, the Engineer in Chief of the Dublin Port and Docks, before working as assistant to the county surveyor of County Antrim. He returned to Dublin in 1871 and worked as Dr.