Mac Somhairle

The Gaelic surname Mac Somhairle means "son of Somhairle". The personal name Somhairle is a Gaelicised form of the Old Norse Sumarliðr and Sumarliði, a name composed from the elements sumar ("summer") and liðr ("seafarer").Anglicised forms of Mac Somhairle include: MacSorley,McSorley,Sorley, and Sorlie.

Forms of the surname have been borne by several families of note. For example one such family was Clann Somhairle, descended from Somhairle mac Giolla Brighde (died 1164); another was a family closely related to the Lamonts and descended from a late thirteenth-century eponym; another was a sept of the MacDonalds and Camerons, descended from an armiger of Eóin Mac Domhnaill II, Lord of the Isles; the name was also borne by a branch of the MacDonalds settled in Ireland.

...
Wikipedia