Fact Check: Is Nancy Pelosi Gavin Newsom’s Aunt? Nancy Pelosi and Gavin Newsom are related by marriage.  Newsom’s aunt, Belinda Barbara Newsom, was married to Ron Pelosi, the brother-in-law of Nancy Pelosi.    Sources: http://articles.latimes.com/2010/oct/16/local/la-me-newsom-20101016 https://www.sfgate.com/bayarea/article/Belinda-Barbara-Newsom-dies-at-73-3183702.php   Continue reading Fact Check: Is Nancy Pelosi Gavin Newsom’s Aunt?