Blythe Newlon Brown (born c. 1952) is an American writer and illustrator, and a collaborator on bestselling novels with her husband Dan Brown. During a plagiarism trial in England in March 2006, it was revealed that she is one of the primary researchers for the art and history in his novels, such as The Da Vinci Code.
Newlon was born in Palmdale, California. She lived and worked in Los Angeles, where she was director of artistic development for the National Academy of Songwriters. It was there that she met Dan Brown, a struggling artist 12 years her junior, who was working as a Spanish teacher at Beverly Hills Preparatory School and trying to write some songs. She took on the unusual task of promoting his work, writing press releases for him, and setting up meetings with people who could be helpful to his career.
When Brown moved back to his hometown in New Hampshire in 1993, Newlon accompanied him. They were married in 1997 at Pea Porridge Pond, a remote location near Conway, New Hampshire.
In interviews, Brown has said that his wife is an "art historian" and "painter". Newlon is also credited as illustrator for The Bald Book.