There are
2207
Calahans in the USA
Calahan is the
13713rd
most common last name in the USA

Historical figures and celebrities called Calahan

JohnCalahan

Political activist known for his involvement in the Civil Rights Movement during the 1960s.

SarahCalahan

Renowned artist and painter who gained recognition for her abstract expressionist works in the early 20th century.

MichaelCalahan

Notable inventor and engineer credited with groundbreaking contributions to the field of renewable energy.

ElizabethCalahan

Pioneering feminist writer and women's rights advocate, known for her influential works on gender equality.

ThomasCalahan

Explorer and cartographer who mapped uncharted territories in the 18th century, expanding geographical knowledge.

Calahan Genealogy

OriginsThe surname Calahan has Irish origins.
Geographic DistributionPrimarily associated with Ireland and Irish diaspora communities.
VariationsCommon variations of the surname include O'Callaghan and O'Calaghan.
Migration and ImmigrationMigration and immigration of individuals with the surname Calahan occurred during various periods, particularly in the 19th century, due to factors such as economic opportunities and the Great Famine in Ireland. Many Calahan families settled in countries such as the United States, Canada, Australia, and the United Kingdom.