Lady Lucas is a minor character in Pride and Prejudice. She is the wife of Sir William and the mother of Charlotte Collins, Maria Lucas, and several other children. She is the mother-in-law of Mr. Collins, a clergyman.
Lady Lucas's first name is unknown, but as she is the wife of a knighted gentleman, she is addressed as "Lady Lucas". Sir William's title is not hereditary, so his eldest son will not receive it when he dies.
She and her husband were overjoyed when Charlotte became engaged to Mr. Collins and that he was to inherit Longbourn due to the entail. Lady Lucas made a very macabre remark about waiting for Mr. Bennet to die.
Lady Lucas is described as "a good kind of woman, not too clever to be a valuable neighbor to Mrs. Bennet." She is a valuable source of gossip.