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

Editor's note: Throughout June, we'll be celebrating the O'Sullivan family on IrishCentral and the many great people who share the Irish last name. Throughout the month, we'll be looking at some of the most successful O'Sullivans/Sullivans and the places in Ireland you should visit associated with the surname.

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!

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