| | Through the years, from the time of the active investigation, until the present day, many people have been put forward as suspects, some famous, some obscure, some known only by a description, such as "the Lodger" or "Leather Apron". However, subsequent research, as well as notes left behind by the three most important senior policemen involved in the case, have allowed researchers to narrow the field to three likely suspects, namely Montague John Druitt, Aaron Kosminski and Aaron Davis Cohen. | | Through the years, from the time of the active investigation, until the present day, many people have been put forward as suspects, some famous, some obscure, some known only by a description, such as "the Lodger" or "Leather Apron". However, subsequent research, as well as notes left behind by the three most important senior policemen involved in the case, have allowed researchers to narrow the field to three likely suspects, namely Montague John Druitt, Aaron Kosminski and Aaron Davis Cohen. |
| − | '''The Royal Ripper''' - in 1976 a book<ref>"Knight, Stephen, Jack the Ripper: The Final Solution, Treasure Press, 1984</ref> was published with the theory that Prince Albert Victor (grandson of [[Queen Victoria]], and in direct line to the throne, had secretly married Mary Kelly and that the Queen had ordered Dr. William Gull to remove Mary and all who knew of the marriage. Subsequent variants of this theory had Dr. Gull doing the killings, without the knowledge of the Queen; a Masonic conspiracy to protect the throne; and even the Prince as the murderer, in fits of madness brought on by [[syphilis]].<ref>"The Complete History of Jack the Ripper"; Sugden, Philip; pp. 7-8</ref> These theories were quickly, and easily debunked, but remain popular due to their gossipy quality and the use of the theory in some popular movies, including the recent "From Hell", which sadly manages to not only portray Sir William merely as a psychotic killer, but also Inspector Abberline as an opium addict. <ref>http://www.imdb.com/title/tt0079592/</ref> <ref>http://www.imdb.com/title/tt0120681/</ref>
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