Lady Hathaway's House Party (a Regency Romance‪)‬

One did not ask the Duke and Duchess of Avondale to the same party. Lady Hathaway knew that, but her cousin the duke had changed his mind about coming, and she’d already invited the duchess, who was on her way. There was nothing to be done except wait to see what happened when the estranged couple met again. Regency Romance by Joan Smith; originally published by Fawcett