Birth Name: Mackenzie Alexander Astin
Place of Birth: Los Angeles, California, United States
Date of Birth: May 12, 1973
Ethnicity: English, Irish, Scottish, German
Mackenzie Astin is an American actor. He is the son of actors John Astin and Patty Duke. His brother is actor Sean Astin (Sean is the biological son of Michael Tell and Patty Duke). His niece is actress Ali Astin. Mackenzie is married to Jennifer Astin.
Mackenzie’s father has English, Irish, and Scottish ancestry. Mackenzie’s mother was of seven eighths Irish and one eighth German descent.
Mackenzie’s paternal grandfather was Allen Varley Astin (the son of John Andrew Astin and Catherine Varley). Allen was born in Utah. John was born in Pennsylvania, the son of Joseph Astin, who was from Lancashire, England, and of Martha Glackin, who was born in Coathbridge, Lanarkshire, Scotland, to Irish parents. Catherine was born in Utah, to English-born parents, William Varley and Mary Ellen Macduff, whose own father was Scottish.
Mackenzie’s paternal grandmother was Margaret Linnie Mackenzie (the daughter of Alexander Gillanders Mackenzie and Edith Ann Midgley). Margaret had Scottish and English ancestry.
Mackenzie’s maternal grandfather was John Patrick Duke (the son of James Bartholomew Duke and Katherine/Catherine Ann O’Hara). John was born in New York, to Irish parents, from Longford. James was the son of John Duke and Mary Sheridan. Katherine was the daughter of Michael O’Hara.
Mackenzie’s maternal grandmother was Frances Margaret McMahon (the daughter of Michael J. McMahon and Hannah Engleman/Ingleman/Ingelman). Frances was born in New York. Michael was born in New York, to Irish parents. Hannah was born in New York, the daughter of George Washington Engelman, who was born in Pennsylvania, of German descent, and of Elizabeth McGovern, who was Irish.
Sources: Genealogy of Mackenzie Astin – https://www.geni.com
Family history of Mackenzie’s father – http://www.genealogymagazine.com
Mackenzie’s maternal grandfather, John Patrick Duke, on the 1920 U.S. Census – https://familysearch.org
Mackenzie’s maternal great-grandparents, Michael J. McMahon and Hannah Engleman/Ingleman/Ingelman, on the 1900 U.S. Census – https://familysearch.org
Michael J. McMahon and Hannah Engleman/Ingleman/Ingelman on the 1910 U.S. Census – https://familysearch.org