The lives of three friends, who fight as young men in the Fenian uprising in 1867 Ireland, take very different paths--a schoolmaster, a lawyer-politician, and a terrorist--yet remain inseparably bound to a common belief in their country.

Ireland, 1867:

A time of unbridled courage and rage. Here Robert Delaney and his young friends join the Fenian uprising and, in one night of violence, seal their fates with a secret that shapes the rest of their lives. Ned Nolan chooses terrorism and the gun; and Delaney himself becomes Ireland's champion, rising to power as a politician - and falling in love with a beautiful, forbidden woman who can destroy him as mercilessly as the haunting truth of his past. Together, they are The Tenants of Time...embodying, embracing, and echoing all the passions of this most passionate land.

https://www.amazon.com/Tenants-Time-Thomas-Flanagan/dp/0446353426