Derived from the region in Scotland called Moray seaboard settlement. A notable bearer of this surname was General James Murray (1721-1794), who was the first British Governor-General of Canada.
The town of Garryowen was named after the old Irish tune Garry Owen which was one of Lt. Col. George Armstrong Custer's favorite marching songs. Garry Owen is an old Irish quick-step that can be traced back to the 1800s. it is known to have been used by Irish regiments as a drinking song.
Either Norman-French as a medieval nickname of endearment for a small person from the pre 10th,Century french word daree meaning a pennyweight. An alternative suggested derivation is: dweller near the deer enclosure, as the main focus of the early Derry's was Cannock Chase, Staffs. a hunting ground over many centuries. 2. Or possibly a locative name from the Gaelic word Doire meaning oakwoods. Or also it may be the anglicised form of the Gaelic o'Doiridh, the name of an ecclesiastical family from Donegal meaning descendant of Doireadh - these being Irish derivations.