Well ...
the meeting between Pico de Mirandola and Reuchlin was a matter of an afternoon tea or not much more, according to Ernst Bloch in a biography of Reuchlin ... a rather good and intensive book, as far I remember, about which I astonishingly find nothing in the web. Well, the book in my private library is lost, too.
Just a German student in Florence getting an audience by the better known scholar.
Reuchlin's first book about Kabbala was a beginner's book about Kabbala, plotting a talking between men from 3 different cultures, a Christian (Reuchlin himself), a Jew and an Epicurean (?). My rememberance is dark, maybe Reuchlin took the idea from somebody else (I was much younger, when I read the book, so please excuse) ... probably an author of the kabbalistic surrounding, who wrote about the talking between 3 speakers of the 3 world religions (?).
The book "The correspondence of Johann Amerbach" ...
http://books.google.com/books?id=dx...kSbz3CpWQyAT7xImXDQ&client=firefox-a#PPA61,M1
... contains interestinng details of the production situation of Reuchlin's text. Reuchlin is supported by the following persons:
* Johann von Dalberg(* 1445), bishop of Worms, wellknown as supporter of Conrad Celtis, had been as a student in Ferrara in 1476, where he became acquainted to the German humanists Agricola and Dietrich von Plieningen; later he reached, that Agricola came to Heidelberg, where he in a short time as a teacher attracted Conrad Celtis
* Wimpheling, conservatist, later the foe of Thomas Murner and a "fighting humanist"
* Sebastian Brant, a short time later author of the bestselling "Ship of the Fools"
* Trithemius, already with 21 years (in 1483) the "elected abbot" in Sponheim, a somewhat ruined cloister, where he did build up the library from 50 items to more than 2000
* Leontius, * ca. 1460, still young in 1494, monk and poet, constantly involved in the printing business
* Johann Heynlin, once a well accepted professor at the Sorbonne in Paris ("in 1469 elected rector of the university"), who had introduced the printing press in Paris and France, in 1494 already rather old and he had returned to Basel
Well, with the old man Johann Heynlin (also called Johannes de Lapide) we've the key figure of the development ... he was professor in Paris and introduced there book printing (1469). In Paris he was teacher to Johannes Reuchlin and the later printer Johann Amerbach, who is said to have appeared 1477 in Basel. The first great printing success of Amerbach became Reuchlin's Latin word book Vocabularius Breviloquus, 1475-76 ...
The story, how Reuchlin came to Paris ... Reuchlin (15 years old) had studied shortly in Freiburg im Breisgau, when he got in 1470 the mission to accompany the younger son of Charles I, Margrave of Baden, to Paris ... this younger son, 14 years old, was later (since 1496) Fredrick IV, bishop of Utrecht, a man with many wars and not much interest to his duties as bishop. The reason for the choice was his fine Latin.
Charles I himself was married to a sister of the Emperor ... a great familiary connection, but Emperor Fredrick III. behaved lazy in regard of the Empire till ca. 1475, when Burgund attacked the city of Neuss, and the Emperor with a great army intercepted. From this time on Charles and soon later his oldest son always took the military side with the Habsburgers and participated in the lucky politic of Maximilian I.
So Reuchlin had splendid chances in young years ... he started to learn Greek with Heynlin and in 1474 he went with Heynlin to Basel, probably working at his Latin wordbook. But he returned to Paris, is 1478 in Orleans and finishes his studies 1481 in Poitiers. It's curious, that Reuchlin in a time, when German-French relations after the death of Charles the Bold of Burgund had a rather bad state, were in France. Was he used as a sort of diplomat or hidden agent? 1478 the city of Orleans is the place of a council, at which the French king Louis XI is present.
......
Well ... I took (right now) some reading through some biographies, got some anger cause all the contradictions and still remember the lost Ernst Bloch biography as the best. So I stop this consideration ...
Your approach is - in my humble opinion - WRONG
1. Reuchlin's work is too young to have been of importance for the development of Tarot.
2. The "kaballistic works" of Reuchlin have a minor importance to Reuchlin - he was a "big man" and "great humanist" in other aspects. His "world importance" he got mainly through the Pfefferkorn-Reuchlin conflict as a preparation of the later reformation. Nonetheless he was before already a great man, who had started a lot of things in Germany, mainly the distribution (translations etc.) of scriptures in old languages. Especially worthful he was as a teacher in these languages.
3. The relation Reuchlin-Agrippa isn't mentioned in the biographies of Reuchlin ... maybe it was of importance and a natural one for Agrippa, but not for Reuchlin. As Reuchlin was a "great man", it was natural to Agrippa to give lectures about the scriptures of Reuchlin, especially about Reuchlin notes about Kabbala, as Agrippa regarded the Kabbala as an important topic.
Wikipedia writes to Agrippa: "In 1512, he taught at the University of Dole in France, lecturing on Johann Reuchlin's De verbo mirifico; as a result, Agrippa was denounced, behind his back, as a "Judaizing heretic."
Jews had been driven out of France in 15th century, in 1512 we have a militaric conflict in Italy, involving the Empire against France. Surely not a good time to lecture about the scripture of a German humanist about an unpleasant topic ... Agrippa was inviting trouble, especially as he had fought before in the army of Maximililian.
4. The relation of Agrippa to Trithemius is mentioned in Agrippa's book in a personal manner. As Trithemius had been a great and famous librarian (possibly this was the greatest library in Germany then) and Agrippa's work is something,which Agrippa compiled in a somehow wild manner of libraries out of many different sources, it might be concluded, that Agrippa got most of it in the library of Trithemius. Sponheim is not too far from Cologne, it's natural that Agrippa belonged to the many scholars and students, who visited this library.
5. The Sepher Raziel was relatively far spread. The author might have been Eleazar of Worms ... a German Jew. Cusanus knew it and wrote about it. Conrad Bollstatter wrote about it.
It's not necessary to see an intensive connection Cusanus-Reuchlin ... Reuchlin is too young for Cusanus. I don't know, where you find a "brotherhood of St. Jerome" ... probably you think of the "brotherhood of Common life", originated in Deventer (?).
"The Imitation of Christ (or De imitatione Christi)", by Thomas à Kempis, was a bestseller of 15th century, very farspread. "The number of counted editions exceeds 2000," says the English wikipedia.
http://en.wikipedia.org/wiki/The_Imitation_of_Christ_(book)
Thomas à Kempis belonged to the brotherhood. A John Wessel or Johan Wessel Harmensz Gansfort of Groningen, regarded as a great early humanist and a pre-Luther-reformist had also connections ...
http://en.wikipedia.org/wiki/Wessel_Gansfort
In some versions of Reuchlin's biographies it's assumed, that Reuchlin learnt some of his Hebrew from this man in 1475 in Basel ... this version is contradicted by other informations, according which Reuchlin learnt Hebrew in 1492 in Linz and again 1498 in Italy.
A relation of Cusanus to Deventer and the brotherhood was very natural, not really special and signifying.
No doubt, it was natural - and not very mysterious - for Reuchlin as a great humanist to know a few texts of Cusanus.
***
It has been made a lot of the both small texts of Reuchlin, which might be called kaballistic. It has been made much of the meeting between Reuchlin and Pico de Mirandola ... the talk of an tea at afternoon. There have been a lot of activities of later researchers to blow up these little things to give them a very high evalution against other things, which also took place.
...
...Trionfi.com for instance "blows up" very few and spurious sentences in 15th century to "remarkable events" in 15th century. Sure, these small sentences are important for playing card history and have their value, but it's natural to observe, that our own activity and attention around this theme creates a very special effect, which somehow is not fair to other activities in 15th century of greater importance ...
Reuchlin finally lost his process against Pfefferkorn by a judgment of Pope Leo(1420), and Pfefferkorn finally triumphed with a ...
(Illustration showing the humanist Johannes Reuchlin kneeling and wringing his hands while Johannes Pfefferkorn stands by him in a master's robes. Woodcut, Cologne 1521)
... and Reuchlin died perhaps in grieve about it (1522), though one year after Leo (died 1521), and Pfefferkorn had not much time for his triumph (died 1523).
The greater process in history became the reformation and 1527 saw the sacco di Roma.
(Reuchlin reads with double tongue from the Talmud, Pfefferkorn triumphing)
(Reuchlin, Hutten and Luther as "patron libertatis", in the middle the Cologne Dominicans with Murner as the cat "Murnar")
and here at a large picture
http://mek.niif.hu/01200/01267/html/img/nagy/07-047.jpg
Reuchlin triumphing ("Capnio" is a Latin name of Reuchlin), the lying man in the foreground is surely meant to be Pfefferkorn (?)
... and that all of the battle of the images with the "7-häuptige Papst-Tier"
http://mek.niif.hu/01200/01267/html/img/nagy/07-049.jpg
and the 7-headed Luther
http://mek.niif.hu/01200/01267/html/img/nagy/07-053.jpg