Irish derivation: Mac Suibhne

Name meaning: "Son of the pleasant one"

Counties associated with the name: Donegal

Coat of arms motto: "Strike for Victory."

Read more: What’s your Irish clan?

Interesting facts:

 - The clan originates in Scotland.

Some famous Sweeneys:

 - Alison Sweeney (1976-, American television actress)

 - Anne Sweeney (1957-, President of Disney-ABC Television Group)

 - Bob KO Sweeney (1894-1961, American boxer)

 - Brian Sweeney (1974-,  professional baseball player)

Read more: What’s your Irish clan?

Fun facts and history behind your Irish family name.