The Fairweather Sisters Series : Books 1-3
Anya Wylde

Penelope: Leaving behind the rural charms of Finnshire, Miss Penelope Fairweather arrives in London with hope in her heart and a dream in her eye. The dowager, no less, has invited her for a season in London, where she will attempt to catch a husband.
Seeking Philbert Woodbead: Celine hurtles off to London to help the duchess run the Blackthorne Mansion and to discover the whereabouts of her lost love Philbert Woodbead.
Dorothy: Circumstances force Dorothy May Fairweather to marry Lord William Edmund Huxley, the man her best friend is in love with and the Duke’s arch enemy. With her one foolish mistake, Dorothy manages to vex all those that mean the most to her.