Times Convert (All Soul Universe 1) by Deborah Harkness

Sunday Times Number One bestselling author Deborah Harkness returns to the spellbinding world she created in A DISCOVERY OF WITCHES with an unconventional love story.

From human to vampire...

Marcus Whitmore was made a vampire in the eighteenth century. Over two hundred years later, he finds himself in love with Phoebe Taylor, a human who decides to become a vampire herself.

And with tradition enforcing separation from Marcus, Phoebe's transformation will prove as challenging now as it was for Marcus when he first encountered Matthew de Clermont, his sire.

TIME'S CONVERT moves with epic sweep from the battlefields of the American Revolutionary War, through the treachery of the French Revolution to a bloody finale in New Orleans.