Armstrong Family History
Armstrong Name Meaning
English (common in Northumberland and the Scottish Borders): Middle English nickname for someone who was strong in the arm. Irish: adopted as an English equivalent of Gaelic Ó Labhradha Tréan ‘strong O’Lavery’ or Mac Thréinfhir, literally ‘son of the strong man’, both from Ulster.
Source: Dictionary of American Family Names ©2013, Oxford University Press