In reply to the suggestion that Henry Lincoln was also referred to in the book, since he has medical problems resulting in a severe limp, like the character of Leigh Teabing, Brown stated he was unaware of Lincoln's illness and the correspondence was a coincidence.
Untuk menanggapi dugaan bahwa Henry Lincoln juga disebut dalam novel ini—karena ia memiliki masalah kesehatan yang menyebabkan kepincangan parah—sebagaimana karakter Leigh Teabing, Brown menyatakan bahwa ia tidak menyadari kalau Lincoln sakit dan korespondensi tersebut merupakan suatu kebetulan.