Discover their roots.

Katherine Heigl

Actor · Model

*62.5% German *12.5% Swiss-German *25% Irish

Washington, D.C., U.S.

Katherine LaNasa

Actor

Cajun French, English, one eighth Italian Sicilian, 1/32 Spanish Catalan, Scottish, German, French-Canadian, more distant Scots-Irish/Northern, Swiss-German, and Irish

New Orleans, Louisiana, U.S.

Katherine McNamara

Actor · Musician

German, English, Irish, Welsh, Swedish, Swiss-German, distant Dutch and French-Canadian

Kansas City, Missouri, U.S.

Katherine Moennig

Actor

German, possibly Scottish and Irish

Philadelphia, Pennsylvania, U.S.

Katherine Ryan

Actor · TV Personality

Father: Irish · Mother: Irish, some English

Sarnia, Ontario, Canada

Katherine Schwarzenegger

Socialite

Father: Austrian, some Czech · Mother: Irish, as well as German, small/distant amounts of Scottish, English, Dutch, and French Huguenot

Los Angeles, California, United States

Kathleen Quinlan

Actor

Father: Irish · Mother: English, Scottish, Welsh, Irish

Pasadena, Los Angeles, California, United States

Kathleen Wynne

Politician

Irish, English, Scottish, Northern Irish

Richmond Hill, Ontario, Canada

Kathryn Bigelow

Father: English, German, remote Swedish, Irish, and Swiss-German · Mother: Norwegian

San Carlos, San Mateo, California, United States

Kathryn Hahn

Actor

German (62.5%), Irish, small amount of English

Westchester, Illinois, U.S.

Kathryn McCormick

Actor · TV Personality

Scottish, Irish, English, possibly other

Augusta, Georgia, U.S.

Kathryn Newton

Actor · Athlete

English, Irish, Scots-Irish/Northern Irish, Welsh, German, one eighth Danish

Orlando, Florida, U.S.

Kathryne Dora Brown

Actor

Father: African-Jamaican · Mother: Irish, along with English, Scottish, German, distant Dutch

Los Angeles, California, United States

Kathy Baker

Actor

French (maternal grandmother), English, some Irish, 1/32 Polish

Midland, Texas, U.S.

Kathy Bates

Actor

English, some Irish, Scottish, German, Scots-Irish/Northern Irish, Cornish, and Welsh

Memphis, Tennessee, U.S.

Kathy Griffin

Actor · TV Personality

Irish

Oak Park, Illinois, U.S.

Kathy Hochul

Politician

Irish (at least 62.5%), along with English and German

Buffalo, New York, U.S.

Kathy Kinney

Actor · TV Personality

French-Canadian, Irish, possibly other

Stevens Point, Wisconsin, U.S.

Katie Aselton

Actor

Irish, French-Canadian, English, remote Dutch

Milbridge, Maine, U.S.

Katie Boland

Actor

Irish, English, possibly other

Toronto, Ontario, Canada

Katie Cassidy

Actor

German, Irish, English, Swiss-German, distant Scottish, remote Welsh

Los Angeles, California, United States

Katie Chang

Actor

Korean (paternal grandfather), Irish, German, Luxembourgish, Scottish, likely some Swedish

Chicago, Illinois, U.S.

Katie Cleary

Actor · Model

Father: Irish, German · Mother: Italian

Chicago, Illinois, U.S.

Katie Dippold

Actor

Italian/Sicilian (one eighth), German, Irish, English

Freehold Township, New Jersey, U.S.

Katie Featherston

Actor

English, German, Irish

Tarrant, Texas, U.S.