Jäcklin

Jäcklin was a Jewish financier of Ulm who probably served as president of the Jewish community of Ulm for many years.

He married the daughter of the "Grossjuden" Moses of Ehingen, with whom he had several sons who later became citizens of Strasburg, Reutlingen and Nuremberg. It is known that Jäcklin provided considerable loans to the municipal government of Ulm and to the counties of Helfenstein, Altenbeck, and Werdenberg. In 1378 he, for example, advanced a sum of 1,680 gulden to the community of Ulm for the redemption of the monastery of Langenau, receiving 84 gulden interest semiannually; and later, 1,800 gulden, receiving the gate-toll of the city in payment. Later that year, the council of Ulm made an agreement with him to declare void all cities’ debts, except the two loans mentioned before.

A letters patent ("Tedingbrief") which gave him the right to remain in Ulm until Dec. 6, 1379 was preserved.