He and his not yet identified children might form the links in some of the suggested lineage conjunctions between forefather “Mostel b’ Josef Schaffhausen mi Nürnberg” and his descendants in later generations.

Josef b’ Mostel is, unlike his brothers Maier and Isaac, not mentioned in the preserved Nürnberg Councilbooks. This might be caused by the lacking of a Taxbook supplement over the period 1470-1497. Furthermore 2 options have to be considered: (1) As Josef has the same given name as his grandfather it might be assumed that he was the eldest son of Mostel — and must have been born between 1465 and 1470. If so: he may have left Nürnberg at young age, long before the enforced departure of his family. (2) The other (less plausible) option would be that Josef was younger than his brothers (being not ‘firstnamed’ in the usual order, e.g. because their grandfather hadn’t died yet) — and may have been born not much earlier than 1490, thus as a child still too young to be mentioned in the Town books. In the current stage of genealogical research I’m following the first option.
So, presumably Josef b’ Mostel was born between 1465 and 1470 in Nürnberg and left the town around 1485, i.e. after having begun to learn the goldsmith craft from his father— [perhaps marrying young, who knows to a daughter of another goldsmith living elsewhere, and who knows in or near Stuttgart — by the way: also from this town the jews were expelled, in 1498 — The yiddishe name of Stuttgart “Shtuckert” was in some instances added to the surnames of several following generations of the Goldschmidt family — and after having to leave Stuttgart, he went to Schwarzach, the town that later on was mentioned in his surname]
The here sketched track record of Josef’s youner years is not more than a plausible assumption. But an obvious certainty is that Josef has stayed in regular contact with his family, his father and his brother Isaac in Aschaffenburg — while it seems that during some periods he was present in the region of Frankfurt.

Sustaining facts:
> 1524 [cf Ele Toldot, Frankfurt, Ug E.56.F.1, Jahr 1524 ®27] Josef Goldschmidt (d. abt 1550) “…has a son who was baptized as Christoffel Forpach, now living in Würzburg, demanding support from his father” — a possible conclusion is that around 1524 Josef was (temporarily?) staying in Frankfurt —

> ca 1537 [Quote] “…..one Jewish goldsmith, Baruch, does appear in East Franconia, who, on being received in Schwarzach in 1537, promised to live only by his craft.” — this passage is from an entry in “The Jewish Encyclopedia” ®52, refering to an article in “Monatsschrift” ®51 — Later I found the original text of the quoted article (Monatschrift 1880, Vol 10, october, p 463) ®51 by Heinrich Epstein, where more specifically was mentioned that Baruch’s father was already living in Schwarzach! And it seems questionable that it was exactly in the quoted year 1537 — for that matter: from the article’s context must be concluded that this fact concerns an ordinance (likely dated even before 1537), issued by the prince-bishop Konrad II von Thüngen who was reigning East-Franconia 1519-1540]:
“…..In einem Erlass vom Jahre 1537 verbietet Konrad auch das Beherbergen der Juden …… Mittlerweile werden mehrere jüd. Familien auf Lebensdauer in Schütz genommen und ihnen ein Wohnsitz angezeigt. Interessant ist die Inschutznahme eines ״Juden Baruch”. Dieser nemlich war Goldschmied von Beruf und erhielt gleich seinem Vater die Erlaubniß, in Stadtschwarzach zu wohnen. Er verspricht, nur seinem Handwerke zu leben und mit fremden Juden nicht zu verkehren. Sollte es den Bisch. gefallen, ihn aus Stadtschwarzach zu ״versetzen", so wolle er sich fügen. Ueberhaupt verspricht er unbedingten Gehorsam”.
— this said Baruch might well be a son of Josef Schwarzach b’ Moshe Goldschmidt Nürnberg — and probably also the forefather of [Baruch Daniel] Shmu’el b’ ? Goldschmidt Shtuckart segal (b. ca 1575, d. 1624 Witzenhausen) and of
[Moshe] Baruch/Benedikt b’ Jehuda-Leib Shtokkert (b. ca 1590, d. ca 1643 Kassel).

> 1542 Josef is working as goldsmith in Schwarzach — “Joseph v Schwarzach” is mentioned as a brother of Isak v Aschaffenburg [cf ®26 p.443, note 61] . Together they filed a claim against the “Hanauer Untertan Philipp v Dorsfelden” [cf ®48 p.313, notes 191, 193)

[NB: — Stadtschwartzach, nowadays usually named Schwarzach-am-Main is situated 20 km east of Würzburg [cf his converted son NN], 70 km northwest of Nürnberg [cf his birthplace], 85 km south east of Aschaffenburg]

> 1550 “After the death of the goldsmith Josef his brother Isaak Moshe Aschaffenburg (Goldschmidt) is the Guardian/Custodian of his children” [cf ET: Ge 1550-122] — conclusion: Josef’s younger children (not yet married in 1550) must have been born not much earlier than 1530. Thus Josef may have been married more than once and in the last years of his life he may have been living (again?) in the Frankfurt Region.

the here-above stated record of Josef b’ Mostel Goldschmidt, might hereafter be followed in a hypothetical offspring construction, tentatively linking the son(s) of Mostel Goldschmidt Schaffhausen with the later generations