When Joseph Morris Dehart was born on 29 March 1910, in New Jersey, United States, his father, Joseph M DeHart, was 29 and his mother, Mary Kuhlthau, was 29. He lived in Milltown, Middlesex, New Jersey, United States for about 30 years. He registered for military service in 1942. He died on 20 February 1984, at the age of 73, and was buried in New Brunswick, Middlesex, New Jersey, United States.
Scottish: variant of Dewar , found chiefly in Lanarkshire.
German: from an old personal name Teudoard, composed of Old High German diot ‘people, nation’ + wart- ‘observer, guard’.
Altered form of Dutch De Waart (or of some other like-sounding surname), a variant of De Weerd .