In the 17th century it was thought to be the work of the 13th-century Oxford natural philosopher Roger Bacon
, whose legend includes a prophesying mechanical brazen head and conversations with demons; subsequent rumours proposed that John Dee, the Elizabethan mathematician and communicator with angels, brought it from England to sell to Rudolph.
, Nicholas Copernicus, Johannes Kepler, and James Clerk Maxwell also blended their science and faith to the benefit of us all.
According to Maloney, the current opinion, with one exception, is unanimous: William of Sherwood, Peter of Spain, Roger Bacon
, and Lambert of Auxerre did not borrow from each other.
For the longest time, many believed it was the work of the 13th century English Franciscan friar Roger Bacon
- a theory that was disproved when the manuscript was carbon-dated and was found to have originated in the early 15th century.
Mr Keys, who was living in Llanuwchllyn, near Bala, in North Wales, at the time of his son's death, led the campaign with fellow bereaved father Roger Bacon
The campaign was led by Reg Keys and Roger Bacon
, who both lost their sons during the Iraq War.
The Iraq War Families Campaign Group, led by Roger Bacon
and Reg Keys, whose sons were also killed, are launching a PS150,000 crowd-funding initiative.
OATH Roger Bacon
, whose son Matt, a major in the Intelligence Corps, was killed by a roadside bomb in 2005, said: "I would like to see Tony Blair in court and answering questions under oath.
Rose Gentle, mother of Fusilier Gordon Gentle, Sarah O'Connor, sister of Sergeant Bob O'Connor, Roger Bacon
, father of Major Matthew Bacon, and Reg Keys, father Lance Corporal Tom Keys, who all were killed in Iraq
, whose son Matthew was killed in Basra in 2005, is a member of the Iraq Families Action Group and he has said Blair "committed an illegal act in taking us [the UK] there", adding that if the report says inadequate equipment was to blame for some deaths then legal action to claim damages would be a possibility.
and Ramon Hull, expressions of a multicultural Middle Ages.
From the work of elixir-making alchemists to the concoction of gold, pearl, and coral that scientist Roger Bacon
swore by, this book explores the fascinating and surprising history of humanity's attempts to achieve immortality.