Elizabeth Lane 
My Lord Savage [EPUB ebook] 

Black Otter, Lenape chieftain, swore he’d return to his children, his land, his life. There was little to value in the white man’s realm-except for one regal, openhearted woman of courage. Rowena alone gave him strength and hope-and awakened the possibility of love.Rowena Thornhill knew nothing of passion, her days being filled instead with study and family duty. But when she joined her fate with that of "her" captive, Black Otter, her proper English life became a whirlwind of danger and desire.