|MacIlmurray||rare: Belfast area. Ir. Mac Giolla Mhuire, Muire, the Blessed Virgin. The name was associated with W Ulster. See also Gilmore.|
|MacMorrow||numerous: mainly Connacht. Ir. Mac Muireadhaigh (mariner). A name associated with the O'Rourkes of Breifne.|
|MacMurray||numerous: E Ulster etc. Ir. Mac Muireadhaigh, (mariner). Mod. Mac Muirí, a sept of Leitrim, but mainly Scottish from Galloway. SS.|
|Morrow||Very numerous: mainly Ulster. English toponymic generally; it may stand for Mac Morrow in W Ulster & Connacht.|
|Murray||Very numerous: all areas. Ir. Ó Muireadhaigh, Mac Muireadhaigh. These derive from the popular first name Muireadhach, lord, master. The name extended to Scotland whence many present-day Murrays in Ulster. See also Murrihy. IF.|
Parishes where Morrow and a second surname are found together
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