’s 1757 map, based on a drawing sent by Bertram by early 1750, cleaned up and reoriented to face north , In 1746, Bertram composed a letter to the English
antiquarian William Stukeley on Gram's recommendation. He hesitated sending it and Stukeley did not receive it until 11 June 1747. He found it "full of compliments, as usual with foreigners", and his reply brought a "prolix and elaborate Latin epistle" from Gram in Bertram's favour. Gram was widely known and respected in English universities. After a few further letters, Bertram mentioned "a manuscript in a friend's hands of Richard of Westminster, ... a history of Roman ... and an antient map of the island annex'd." He eventually "confessed" that another Englishman, "wild in his youth, had stolen it out of a larger manuscript in an English Library", permitting its use to Bertram upon his promise of secrecy. Stukeley was considering retirement but, receiving a new position in London and hearing of Gram's death, he renewed the correspondence and received a "copy" of its script made by Bertram. David Casley, the keeper of the
Cotton Library, "immediately" described it as around 400 years old. Stukeley thereafter always treated Bertram as reliable. He "press'd Mr Bertram to get the manuscript into his hands, if possible ... as the greatest treasure we now can boast of in this kind of learning." Bertram refused his attempts to purchase the original manuscript for the
British Museum, but Stukeley had received copies of the text piecemeal over a series of letters and had a version of the map by early 1750.
Beale Poste noted that the volume appeared in no manuscript catalogues of the era but offered that it could have been stolen at the time of the Cotton Library's fire in 1732. There had been a monk named Richard at
Westminster Abbey in the mid-15th century and Bertram suggested this date to Stukeley. Stukeley preferred instead to identify Bertram's "Richard of Westminster" with
Richard of Cirencester, who had lived at Westminster in the late 14th century and was known to have compiled
another history. Stukeley made the text and map available at the Arundel Library of the
Royal Society. Stukeley examined the text for years before reading his analysis of the work and its itineraries before the
Society of Antiquaries in 1756 and publishing its itineraries in 1757. He was excited that the text provided "more than a hundred names of cities, roads, people, and the like: which till now were absolutely unknown to us" and found it written "with great judgment, perspicuity, and conciseness, as by one that was altogether master of his subject". His account of the itineraries included a new engraving, reorienting Bertram's map to place north at the top. Later in 1757, at Stukeley's urging, Bertram published the full text in a volume alongside
Gildas's
Ruin of Britain, and the
History of the Britons traditionally ascribed to
Nennius. Bertram's preface noted that the work "contains many fragments of a better time, which would now in vain be sought for elsewhere". The preface goes on to note that, "considered by Dr. Stukeley ... a jewel ... worthy to be rescued from destruction", Bertram printed it "from respect for him". This volume's map was the earlier one and Stukeley later employed it for his own published posthumously in 1776. The work was studied critically and various aspects of pseudo-Richard's text were universally rejected, including his claimed province of
Vespasiana in
lowland Scotland.
Edward Gibbon considered pseudo-Richard to be "feeble evidence" and
John Pinkerton tersely noted that, where the two differ, "Ptolemy must be right and Richard must be wrong." Nonetheless, the legitimacy of the text itself was unquestioned for decades despite no actual manuscript ever being seen by another person. Instead, Bertram always provided credible reasons why the actual document could not be made available and provided copies to satisfy each new request for information. ==Later life==