Thomas Langlois Lefroy
In 1796, Lefroy began a flirtation with English novelist Jane Austen, who was a friend of an older female relative. Jane Austen wrote two letters to her sister Cassandra mentioning "Tom Lefroy", and some have suggested that it may have been he whom Austen had in mind when she invented the character of Mr. Darcy in "Pride and Prejudice", as the courtship between Tom Lefroy and Jane Austen took place over the year or so that "Pride and Prejudice" was written. In his 2003 biography, "Becoming Jane Austen", Jon Spence suggests that Jane Austen actually used her and Tom LeFroy's personalities as the models for Mr. Darcy and Elizabeth Bennet, but not in an expected way. Spence suggests that Jane Austen used Tom Lefroy's more gregarious personality as the model for the novel's heroine Elizabeth Bennet, and her own measured demeanor was used as the model for the male protagonist, Mr. Darcy. So while the exact influence of Tom Lefroy on "Pride and Prejudice" continues to be debated, it does seem certain that his presence in Austen's life is in some way reflected in the novel.
John Willoughby
Jane Austen created Willoughby as a protagonist driven by the need for his own pleasure, whether that be through amusing himself with whatever woman crossed his path, or via marrying in order to obtain wealth to fuel his profligate ways. He does not value emotional connection and is willing to give up his true love for more worldly objects. This characterization is similar to that of George Wickham in Jane Austen's subsequent novel, "Pride and Prejudice". They both have the charm to ingratiate themselves with people and to deceive them, as John Willoughby did to Marianne when apprising her of his journey to London, and George Wickham to Elizabeth by fabricating a story to demonstrate how much anguish he had experienced in his life. And they both show themselves willing to seduce and ruin women—Beth in Willoughby's case and Lydia Bennet and Georgiana Darcy in Wickham's case. However, it appears that Willoughby is not completely without a conscience because he did express remorse and guilt concerning his actions toward Marianne, and showed himself to be capable of falling in love. In contrast, Wickham was very calculating in his behaviour and never demonstrated any regret regarding his treatment of Georgiana or Lydia, or embarrassment about his lies to Elizabeth.