Place of Birth: New York City, New York, United States
Date of Birth: July 6, 1986
Ethnicity: Ashkenazi Jewish, German, Irish, Norwegian
David Karp is an American web developer and entrepreneur. He is the founder and CEO of the short-form blogging platform Tumblr. He is the son of Barbara G. (Ackerman) and Michael D. Karp.
David’s father is of Jewish or part Jewish ancestry. David’s mother has German, Irish, and Norwegian roots.
One of David’s paternal great-grandfathers was Max Karp.
David’s maternal grandfather is Kenneth Allen “Ken” Ackerman (the son of Clarence George Ackerman and Agnes L. Knutson). Clarence was the son of Nicholas Ackerman, whose parents were German immigrants, and of Canadian immigrant Ellen Victoria Swain, of Kingston, Ontario, who was of Irish descent.
David’s maternal grandmother is Catherine L. Roberts.
Sources: http://www.mercurynews.com
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David’s maternal grandfather, Kenneth Allen Ackerman, on the 1930 U.S. Census – https://familysearch.org
David’s maternal great-grandfather, Clarence George Ackerman, on the 1920 U.S. Census – https://familysearch.org