H. Rider Haggard 
Fair Margaret 

In the turbulent reign of King Henry VII, Peter Brome finds himself with a soldier’s blood on his hands — blood the Spanish ambassador’s men demand be repaid. Poor and fatherless, Peter delivered the killing blow in self-defence — and because of his helpless love for Margaret — dark-eyed daughter of John Castell, the kindly and wealthy merchant who has overseen his upbringing. Now another pursues fair Margaret — the powerful Marquis d’Aguilar of Spain, traveling in England upon a secret mission for the Inquisition. More than love hangs in the balance! (Goodreads)