Who is Alasdair Cynster (Lucifer) from All About Love and what is their importance?

Alasdair Cynster, better known as Lucifer, is one of the two main characters of this book. This book follows him as he changes from a man running from love to a man running to love. Lucifer is one of the most eligible bachelors that the London ton has to offer. He comes from a family of dukes and duchesses, but is not in line for a title himself. He is an experienced cavalry officer and an avid collector of silver and jewelry. Lucifer could marry most any woman that he intends, but instead shies away from even the idea of love and marriage. He makes his escape from the ton to visit a friend and mentor, only to find him dead.