My Wikipedia editor advises that your reference has been reviewed and corrections have been made to the Roger Conant article. Hopefully these changes will be satisfactory. As mentioned, some of the text was before our time and some was ours.
Regarding James Chilton, he shares the 'silver book' with my ancestor Richard More, who came as a 'kidnapped' small boy to the Mayflower with 3 siblings, all of whom died the first winter except Richard. His is a bizarre and tragic story and through his mother, was the only person on the Mayflower with royal ancestry. By the way, while we were working on Richard's Wikipedia article, we updated James Chilton's from what was originally there (as was not well written) to conform to what the 'silver book' has for him.
And we are presently developing a Wikipedia article for John Winslow, husband of Mary Chilton, and Chilton's 'silver book' will be one of the references, among others.
Regarding Caleb Johnson, he has quite a "Mayflower industry" going, much of which is quite well done - and in fact I have his book 'The Mayflower and Her Passengers' on my shelf and has served as a useful reference doing Mayflower-related articles. But there are other quite excellent books that cover a wider spectrum of the whole Mayflower/Plymouth Colony experience such as Stratton's 'Plymouth Colony its History and People 1620-1691' and Philbrick's 'Mayflower - A Story of Courage, Community and War' as well as a quite new one that covers an even wider area for the subject: Making Haste from Babylon - the Mayflower Pilgrims and their World' by Nick Bunker (2010), among others. All on my shelf. And for Richard More, he has his own personal story written by David Lindsay who researched much of his English ancestry and events in his tragic early life - 'Mayflower Bastard - A Stranger Among the Pilgrims'. His story: http://en.wikipedia.org/wiki/Richard_More_(Mayflower_passengerhttp://en.wikipedia.org/wiki/Richard_More_(Mayflower_passenger)