Well, to make a long story short, Alyson Hannigan is Jewish!
Since Alyson Hannigan's mother is Jewish, and in Orthodox Judaism and Conservative Judaism, those with a Jewish mother (or those who underwent a halakhic conversion) are considered Jewish, then that makes her Jewish. Her father is not Jewish.
Alyson Hannigan (whose full birth name is Alyson Lee Hannigan) was born on March 24, 1974 in Washington, D.C., U.S..
She is best known for her roles as Willow Rosenberg in the television series Buffy the Vampire Slayer (1997–2003), Lily Aldrin on the CBS sitcom How I Met Your Mother (2005–present) and Michelle Flaherty in the American Pie film series (1999–present).
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