Place of Birth: Massapequa, New York, U.S.
Date of Birth: February 21, 1963
Ethnicity: English, Irish, Scottish, 1/16th French-Canadian, 1/16 German
William Baldwin is an American actor, writer, and producer. He is the son of Carol Newcomb (Martineau) and Alexander Rae Baldwin, Jr. Among his siblings are actors Alec Baldwin, Daniel Baldwin, and Stephen Baldwin. His nieces are models/actresses Ireland Baldwin and Hailey Bieber. William is married to singer and actress Chynna Phillips, with whom he has three children. He was raised in the Roman Catholic faith.
William’s patrilineal line traces to a Richard Baldwin, who lived in England, c. the 1500s. His father was of English, Irish, and Scottish ancestry. His mother was of French-Canadian, English, Irish, German, and Scottish ancestry.
William’s paternal grandfather was Alexander Rae Baldwin (the son of Sylvester Davis Baldwin and Helen Irene McNamara). Alexander was born in New York. Sylvester was the son of Roswell C./B. Baldwin, who was of Colonial American (English) descent, and of Hannah Miles, who was born in England. Helen was also born in England, to Irish parents, James McNamara and Mary O’Connor.
William’s paternal grandmother was Ruth Mary Noble (the daughter of Leveret/Leverett David Noble and Lena Xea McCauley). Ruth was born in New York. Leveret was born in New York, the son of Daniel McCormick Noble, who was born in New York, to Scottish parents, and of Jane Watson, who was from Yorkshire, England. Lena was born in Moose Creek, Ontario, Canada, and likely had Irish roots.
William’s maternal grandfather was Daniel Leroy Martineau (the son of Henry Frazier Martineau and Ada Emmaline Newcomb). Daniel was born in New York. Henry was of approximately half French-Canadian and half English ancestry, and was the son of Joseph Martineau, who was born in Canada, and of Emma Laura Parsons. Ada had English ancestry, and was the daughter of Daniel Webster Newcomb, who was born in New York, and of Emeline Fay Crawford, who was from Brantford, Ontario, Canada.
William’s maternal grandmother was Marion Alice Sidnam (the daughter of Irving Albert Sidnam and Mary Louise Haas). Marion was born in New York. Irving was the son of David A. Sidnam and Almida Osborne. Mary Louise was the daughter of Francis Xavier Haas, who was German, and of Alice McKenna, who herself was the daughter of James Baron McKenna and Catherine Dunn, and had Scottish and Irish ancestry.
Genealogy of William’s father (focusing on his own father’s side) – http://www.findagrave.com
Genealogy of William Baldwin (focusing on his mother’s side) – http://worldconnect.rootsweb.ancestry.com
William’s maternal grandmother, Marion Alice Sidnam, on the 1910 U.S. Census – https://familysearch.org
William’s maternal great-grandfather, Irving Albert Sidnam, on the 1900 U.S. Census – https://familysearch.org