Grannan Family History
Grannan Surname Meaning
Irish is a shortened form of MacGrannan, which is an Anglicized form of the Gaelic Mag Raghnainn. This name is a variant of Mac Raghnaill, meaning ‘son of Raghnall’.
The name Raghnall itself has its roots in the Old Norse personal name Rǫgnvaldr, which translates to ‘ruler of the gods’.
This Old Norse name is cognate with Reynolds.
Additionally, Irish can also be a shortened form of Ó Grianáin, which can be further researched under Greenan.
Source: Dictionary of American Family Names 2nd edition, 2022
