Not Quite an Angel — Shirley Kiger Connolly

Sir Geoffrey Wentworth thought he knew every alluring woman in San Francisco by now, until on the night before his return to England he meets and is mesmerized by the mysterious Lady Delphia, the daughter of a French Marquis. Not only has she appeared out of nowhere, she unwittingly steals his heart.

When Sir Geoffrey tries to learn more about this irresistible lady of the night, the two are caught in the middle of a severe San Francisco earthquake. Sir Geoffrey soon learns this woman of mystery is no daughter of a marquis, at all, but is the younger sister of a simple country parson, and already engaged to be married.

If there is anything the honorable Sir Geoffrey Wentworth, 2nd son to the Viscount of Salisbury cannot abide is being duped by a woman