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Top o’ the morning to ya! This St. Patrick’s Day, we thought we’d do a little digging and find out where some of our favorite stars and their ancestors hail from. We were shocked to find how many we didn’t know had roots in Ireland. I mean, LiLo we knew about. But Johnny Depp? Who’d have guessed? Enjoy!

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EXPECTED

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Lindsay Lohan: LiLo is of Irish and Italian heritage and was raised Catholic. Her maternal family were “well known Irish Catholic stalwarts.” Her mother Dina Sullivan came from a well known Irish-American family that traced its roots back to County Cork. Dina met and married  Michael Lohan –- another Irish Catholic with Cork roots. That’s the story and we’re sticking to it!
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Olivia Wilde: This young Irish-American lass was born Olivia Jane Cockburn and has dual citizenship in Ireland and the United States. Her father, Andrew Cockburn, was born in London, England and raised in Ireland. Olivia lived in Dublin to attend acting school.
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Megan Fox: Megan Denise Fox is of Irish, French and Native American ancestry and was raised in a Roman-Catholic household.
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Alyson Hannigan: Alyson Lee Hannigan is of Irish descent on her father’s side and Jewish on her mother’s. Though only half-Irish, she was voted by TV Guide as an “Irish person we’d most like to share a pint with.”
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Conan O’Brien: Well duh, he’s Irish! TV Guide quipped, “If Ireland could choose a poster boy or goodwill ambassador, we would nominate Conan O’Brien.” We agree! Conan is the third of six children. His family is Irish Catholic and his ancestors came from County Kerry, Ireland.
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UNEXPECTED

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Demi Lovato Demi is of Mexican descent from her father and Irish and Italian descent from her mother’s side.
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Vanessa Hudgens Vanessa is of mixed cultural background: her father is of Irish and Native American descent, and her mother, a native of Manila, Philippines, is of Chinese-Filipino-Spanish descent.
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Darren Criss Darren is Eurasian — his mother, a native of Cebu, Philippines, is of Chinese, Spanish, and Filipino descent, while his father, a native of Pittsburgh, Pennsylvania, is of Irish descent.
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Johnny Depp: From an interview in 2002, Johnny stated that he was a mixture of German, Irish and Cherokee – among other ethnicities.
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Maggie Q: This Hawaiian-born actress’s father is of Irish and Polish descent and she has said that she is keen to learn more about his family.
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“I believe that my father’s father was Irish,” she says. “My father kept his Irish last name, Quigley. People still think that I can’t speak English for some reason. It’s bizarre.”
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“I’ve never been to Ireland but it’s one of the things I want to do. I know my Asian roots, having lived there for some time, but I haven’t done the Irish side yet. And I’m doing it, believe me, I’m going there soon.”
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Ben Stiller: Ben is half Jewish and half Irish. Being of Irish and Jewish heritage, Ben says his parents serve green matzoh ball soup during their annual Saint Patrick’s Day dinner! Mmmmm!
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NOT EXPECTED, BUT NOT SURPRISED

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Tom Cruise: Tom is of German, Irish, and English ancestry.
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Anne Hathaway: Anne Jacqueline Hathaway is of mostly Irish and French ancestry, with distant Native American and German roots.
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Ashton Kutcher: Christopher Ashton Kutcher is the son of Diane (née Finnegan – can’t get more Irish than that!) and Larry M. Kutcher. His father is of Bohemian (Czech) descent and his mother is of Irish, German, and Bohemian ancestry. Ashton was raised in a conservative Roman Catholic family.
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George Clooney: George Timothy Clooney’s ancestry includes Irish, German, and English. His paternal great-great-grandparents, Nicholas Clooney (of County Kilkenny) and Bridget Byron, immigrated to the United States from Ireland. George was raised a strict Roman Catholic.
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SIBLINGS

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Dakota & Elle Fanning: Dakota and Elle have German (from their paternal grandmother), English, and Irish ancestry.
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The Jonas Brothers: Nick, Joe and Kevin are are Italian, Irish, German and Cherokee Indian … and part French Canadian.
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Macaulay, Rory & Kieran Culkin: Three of the seven very Irish, Catholic Culkin kids went into acting, but Macaulay has enjoyed the most success. His first name means ‘Son of the phantom’ and Culkin means ‘Son of Uilcín’. Whatever you say!
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Zooey & Emily Deschanel: Zooey Claire Deschanel and sister Emily are of French (from their paternal grandfather) and Irish descent.
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Sean & Chris Penn: These brothers’ paternal grandparents were Jewish emigrants from Lithuania and Russia and their mother is a Catholic of Italian and Irish descent.
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William Baldwin (l), Alec Baldwin
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The Baldwin Brothers: It seems like there are so many friggin’ Baldwins we barely have space to acknowledge them all! The Baldwins breed like rabbits. Well, truth be told, there are four: Alec, Stephen, Daniel and William. They were raised in a Roman Catholic family of Irish, English, and French descent.

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Charlie Sheen; Emilio, Renee & Ramon Estevez Carlos Irwin Estevez (aka Charlie Sheen) has two older brothers, Emilio Estevez and Ramon Estevez, and a younger sister, Renée Estevez – all actors. Their father’s grandmother immigrated to America from County Tipperary, Ireland. Other ancestors are from Galicia (northwestern Spain).
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Danny & Chris Masterson These brothers are of Irish descent. When Danny married Bijou Phillips married last October, they had their ceremony in the Irish countryside. In a nod to his Irish heritage, the couple had a formal wedding at a private castle in Tipperary. Romantic!
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Rooney & Kate Mara: The Mara sisters have Irish roots on both sides of her family. The “Rooney” ancestors originate in Newry, County Down. Rooney and Kate are also of Italian descent.
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Casey and Ben in 2008
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Ben & Casey Affleck: Benjamin Géza Affleck-Boldt and brother Casey have Irish, Scottish, English, and German ancestry (the surname “Affleck” is Scottish.)
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Sean & Mackenzie Astin It’s not hard to guess that Sean Patrick Duke (aka Sean Astin) and half-brother Mackenzie have Irish roots – it’s all in the names!
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From left: Ann Cusack; John Cusack & Joan Cusack in 2005
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John & Joan Cusack: John and Joan are Irish-American. The name Cusack is not Slavic as many may believe. It is a Norman name, brought to Ireland when the Normans invaded in 1169. “Cussac” is a city in South Central France.
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Charlie & Jerry O’Connell: The O’Connell brothers are of Irish descent on their father’s side and Polish on their mother’s.

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Matt & Kevin Dillon: The Dillon brothers were born to second-generation Irish American parents Mary Ellen and Paul Dillon. They were raised in a close-knit Roman Catholic family.

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Mark & Donnie Wahlberg: Their father was of half Swedish and half Irish ancestry, and their mother is of Irish, English, and French Canadian descent.

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From left: Andrew Wilson; Owen Wilson; Luke Wilson in 2007
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Owen, Andrew and Luke Wilson: The Wilson brothers are Irish American and Catholic.

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Which celeb would you most like to share a pint with this St. Patrick’s Day?