Written in My Own Hearts Blood
by Diana Gabaldon
The British evacuation of Philadelphia and the ensuing Battle of Monmouth are the major events from the book based on real history.
Claire marries John Grey for protection after Jamie is presumed lost at sea. John and Jamie fight when the details are revealed. John's stepson William is angry at finding out he's Jamie's biological son. Jamie's nephew Ian marries Rachel Hunter, and Rachel's brother Denzell weds John's niece Dorothea in the same ceremony. The Hunters are Quakers; their service with the Continental Army even as noncombatants gets them ostracized by other Quakers.
Claire is wounded at Monmouth, and Jamie resigns from the Continental Army to remain by her side. After spending time in Savannah, they return to Fraser's Ridge, their farm settlement in North Carolina.
The printshop and home of Jamie's adopted son Fergus burns down. Fergus's son Henri-Christian dies trying to escape the flames.
In the 20th century, Jamie and Claire's grandson Jeremiah is kidnapped. Their son-in-law Roger meets Jamie's father and his own when time traveling to search. After the boy is recovered, his family joins the Frasers in the 18th century.