Nancy Horan is an American author of historical fiction, renowned for her captivating novels that delve into the intricate relationships of historical figures. Among her notable works are Loving Frank, a compelling narrative about Mamah Borthwick and her relationship with the iconic American architect Frank Lloyd Wright. This novel not only garnered widespread acclaim but also earned Horan the 2009 James Fenimore Cooper Prize for Best Historical Fiction by the Society of American Historians, solidifying her reputation in the literary world.

Following the success of Loving Frank, Horan continued to explore complex historical relationships through her writing. Her next novel, Under the Wide and Starry Sky, beautifully narrates the relationship between the beloved Scottish author Robert Louis Stevenson and his wife, further showcasing Horan's skill in blending historical accuracy with gripping storytelling.

Prior to her literary success, Horan led a diverse career. She was a middle school English teacher, a freelance journalist, and briefly worked in a public relations firm. Eventually, she settled on an island in Puget Sound, where she continues to live with her husband.