Do you have any resources about Le Morte D'Arthur, particularly about the character Sir Lancelot?
You can find information about both the book and the character in books and academic databases.
For books, there are several different searches you can try. In our library catalog WorldCat, linked below, you could search for morte darthur, Arthurian romances, or expand to search for literary criticism of Malory by searching for su:Malory, Thomas. There are several books and eBooks in the library about the Arthurian legend. Most books about it will have some discussion of Lancelot.
For articles, follow the link below to our Databases by Subject Libguide and select the Literature tab. The databases listed here are the most likely to contain information about the book and the character. You can get instructions in how to use the individual databases in our How to Use Literature Databases Libguide, linked below.