George R. R. Martin
Birth Name: George Raymond Martin
Place of Birth: Bayonne, New Jersey, U.S.
Date of Birth: September 20, 1948
*25% Ashkenazi Jewish
George R. R. Martin, also known as GRRM and George Raymond Richard Martin, is an American novelist and short-story writer in the fantasy, horror, and science fiction genres. He is also a screenwriter and television producer. The second R. stands for Richard, his confirmation name.
George is the son of Margaret Delores (Brady) and Raymond Collins Massella/Martin. He is married to Parris McBride.
George’s mother was of Irish, and a small amount of French-Canadian, descent. George’s paternal grandmother was of English and German ancestry.
All of his life, George had believed that his paternal grandfather, Louis Martin, an Italian immigrant, was his biological grandfather. While appearing on the show Finding Your Roots with Henry Louis Gates, Jr. (2019), George discovered, through a DNA test, that he is not his grandfather’s biological grandson, and that his biological grandfather was a Jewish man whose name and identity the show was unable to locate.
A DNA test whose results were displayed on the show stated that George’s genetic ancestry is:
*53.6% British and Irish
*22.4% Ashkenazi Jewish
*15.6% Broadly Northwestern European
*4.3% Broadly European
*2.3% Broadly Southern European
*0.7% French and German
*0.4% Eastern European
George’s paternal grandfather was Louis Joseph Martin (born Luigi Mazzuoccolo, the son of Giuseppe “Joseph” Mazzuoccollo and Angiolina Giolla/Julla Peluso). Louis was Italian, and was born in Naples, Italy.
George’s paternal grandmother was Grace Dorothy Jones (the daughter of George Broughton Jones and Anna Gassman). Grace was born in New Jersey. George’s great-grandfather George was born in New Jersey, to English parents, Peter Jones, from Eccleshall, Staffordshire, and Jane Hodson. Anna was born in New Jersey, to German parents, John Gassman and Johanna Kimerle.
George’s maternal grandfather was Thomas Henry Brady (the son of James Brady). Thomas was born in New Jersey, to Irish parents.
George’s maternal grandmother was Catharine Therease Wall (the daughter of James N. Wall and Catherine Lantry). George’s grandmother Catherine was born in Ohio, to an Irish father and a Canadian mother, who was of French-Canadian and Irish descent.
Sources: Genealogy of George R. R. Martin – https://www.geni.com
George’s father on the 1930 U.S. Census – https://familysearch.org
George’s paternal grandmother, Grace Dorothy Jones, on the 1910 U.S. Census – https://familysearch.org
George’s mother on the 1930 U.S. Census – https://familysearch.org