Booth by Karen Joy Fowler

Second Hand 

Junius is the patriarch of the Booth family, a celebrated Shakespearean actor who fled bigamy charges in England, both a mesmerising talent and a man of terrifying instability. As his children grow up in a remote farmstead in 1830s rural Baltimore, the country draws ever closer to the boiling point of secession and civil war. Of the six Booth siblings who survive to adulthood, each has their own dreams they must fight to realise - but it is Johnny who makes the terrible decision that will change the course of history - the assassination of Abraham Lincoln. 'Booth' is a riveting novel focused on the very things that bind, and break, a family.