Everything you need to know about the Irish surname O'Sullivan 

Irish derivation: Ó Súilleabháin.

Name meaning: "Descendant of the hawk/dark eyed one."

Read More: I always knew I was an O'Sullivan at heart - Discovering my ancestry

Counties associated with the name: Cork, Clare, Galway, Kerry, Limerick, Tipperary, and Waterford.

Coat of arms motto: The steady hand to victory.

Interesting facts:

- The term “Manifest Destiny” was coined by a journalist named O’Sullivan, who supported the expansion of the United States into the western territories.

- The father of the skyscraper was a Sullivan who also originated the famous architectural axiom "form follows function."

- The great Chicago Fire of 1871 was started by a Sullivan.

- The first tank ever acquired by the state of Israel was a gift from an O'Sullivan.

- The first heavyweight boxing champion of the world was a Sullivan.

- The man hit by the most lightning strikes was a Sullivan.

- First American woman ever to walk in space was a Sullivan.

Read More: Five brave Sullivan brothers died on WWII ship discovered last St Patrick's Day

Some famous O'Sullivan’s:

  • Maureen O'Sullivan (1911-1998, Irish born actress)
  • Denis O'Sullivan (b.1948, Irish golfer)
  • John Francis O'Sullivan (1850-1911, Irish-American awarded the medal of honor during the Indian Wars)
  • Ed Sullivan (1901-1974, American television personality)
  • Anne Sullivan (1866-1936, Teacher of Helen Keller)

Do you know any O'Sullivans? Let us know in the comments!

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Here are some interesting facts about the Irish last name O'Sullivan, including its history, family crest, coat of arms, and famous clan members.