Gerhard Wolfgang Jensch (* 27 January 1920 in Höchst am Main; † 26 October 1990 in Vasia (Italy)) made important contributions to chess composition as an organiser, editor and composer.

Organiser
Jensch was a co-founder of the Standing Commission for Chess Composition at FIDE (PCCC) in 1956 as a delegate of the German Chess Federation. He was president of this commission from 1971 to 1974.
In 1972, the Schwalbe Problem Chess Association became a member of the German Chess Federation on Jensch's initiative.

Editor
Jensch headed the chess columns of several newspapers: Until 1961 in the Wiesbadener Kurier, then in the Süddeutsche Schachzeitung and from 1969 in the Schach-Echo.

Chess composer
Jensch composed a number of tasks, mainly in the field of fairytale chess and studies. Several were honoured with prizes. In 1966, FIDE appointed him International Adjudicator for Chess Composition.

Source: wikipedia.org

" Die Schwalbe"Issue 275, October 2015 reports:

When the FIDE Problems Commission (PCCC) was formed and held its inaugural meeting in 1956, the German Chess Federation (DSB) nominated Gerhard W. Jensch (27.1.1920-26.10.1990) as a delegate, but he was unable to attend the meeting, which was postponed by a month at short notice, and had to limit his participation to an informal preliminary discussion with Nenad Petrović. Jensch's committed involvement in the international problem-solving process continued and was initially honoured in 1962 when he was appointed to the DSB's extended Presidium as a problem solver, culminating in his election as President of the PCCC in 1971. At around the same time, Jensch was working on the admission of the Schwalbe to the DSB, which was decided at the DSB Congress in 1971 and then had to be confirmed by the Schwalbe (therefore 1972 is regarded as the year of accession). An interesting side note: Our current DSB delegate Kurt Ewald was involved in the talks about the Schwalbe's admission; he was also present when the DSB subsidy of DM 6000 per year for the Schwalbe was agreed in a four-way meeting with two DSB board members, Jensch and himself after the decision to join. For many years GWJ edited various chess columns, first in the Wiesbadener Kurier (until 1961), then in the Süddeutsche Schachzeitung. From 1969 to 1980, he headed the chess corner of the Schach-Echo, which he turned into one of the most famous columns of the time and in which he particularly focussed on modern chess.