Roger Bacon, O.F.M.  (c. 1214–1294), (scholastic accolade Doctor Mirabilis, meaning "wonderful teacher"), was an English philosopher and Franciscan friar who placed considerable emphasis on the study of nature through empirical methods.
The Voynich manuscript has been attributed to Bacon by various sources, including Johannes Marcus Marci, Wilfrid Voynich, and in a book drafted by William Romaine Newbold and posthumously edited and published by Roland Grubb Kent in 1928, and in a 2005 book of Lawrence and Nancy Goldstone published by Doubleday and Broadway Books.
While Bacon's reputation probably played a part in the initial association with the manuscript, the document has been shown to be of considerably later date. See also  on the other Voynich Wiki.