Aylmer Vance and the Vampire — Alice Askew; Claude Askew

Davenant fell in love with her almost at once and he had every reason to believe, in spite of her many admirers, that his love was returned. At this time he knew very little about her personal history. He was aware only that she was very wealthy in her own right, an orphan, and the last representative of a race that had once been famous in the annals of history--or rather infamous, for the MacThanes had distinguished themselves more by cruelty and lust of blood than by deeds of chivalry. A clan of turbulent robbers in the past, they had helped to add many a blood-stained page to the history of their country