Johann Friedrich Tönnies

His firm, Tönnies & Behrmann, was a leading Hamburg bank in the early 18th century.

The firm had been founded by his father-in-law (in his first marriage) Johann Behrmann (1635–1698), also a native of Stralsund who had moved to Hamburg, and was originally mainly active in exporting cloth to London.

Tönnies held the grand burghership of Hamburg.

[1][2] A portrait of him by the Swedish painter Anton Paulsen from around 1720 survives.

After the death of his first wife, he married Anna Wolpmann in 1696.