Question: Are Ulf Merbold and Ernst Messerschmid both German?

Context paragraphs:
Marolf: Marolf is a Swiss surname which is a variant of the old Germanic given name "Markulf".  This surname is made of the two elements "mark" and "ulf."  Marc derives from the Old High German word "marka," which means "border."  The other element "ulf" is a derivative of the German word "wolf"--also meaning "wolf."  Therefore, the name Marolf is generally translated as "Border Wolf" (HRC).

Ernst von Siemens Music Prize: The international Ernst von Siemens Music Prize (German: "Ernst von Siemens Musikpreis" ) is an annual music prize given by the Bayerische Akademie der Schönen Künste (Bavarian Academy of Fine Arts) on behalf of the Ernst von Siemens Musikstiftung (Ernst von Siemens Music Foundation), established in 1972.  The foundation was established by Ernst von Siemens (1903–1990) and promotes contemporary music.  The prize honors a composer, performer, or musicologist who has made a distinguished contribution to the world of music.  In addition to the main prize, other prizes are also given.  The total prize money given is currently 3.5 million euros, with the winner of the main prize receiving €250,000.  The prize is sometimes known as "the Nobel Prize of music".

Ernst Thälmann (film): Ernst Thälmann is an East German film in two parts about the life of Ernst Thälmann, leader of the Communist Party of Germany during much of the Weimar Republic, directed by Kurt Maetzig and starring Günther Simon in the title role.  The first picture, "Ernst Thälmann - Sohn seiner Klasse" (Son of his Class), was released in 1954.  It was followed by the 1955 sequel "Ernst Thälmann - Führer seiner Klasse" (Leader of his Class).

Prince Ernst August of Hanover (born 1983): Prince Ernst August of Hanover, (legal name German: "Ernst August Prinz von Hannover Herzog zu Braunschweig und Lüneburg, Königlicher Prinz von Großbritannien und Irland" .  Named "Ernst August Andreas Philipp Constantin Maximilian Rolf Stephan Ludwig Rudolph", he was born 19 July 1983, the eldest child of Ernst August, Prince of Hanover (head of the ancient House of Welf which once ruled the Kingdom of Hanover), and his former wife Chantal Hochuli.

Byron K. Lichtenberg: Byron Kurt Lichtenberg, Sc.  D. (born February 19, 1948) is an American engineer and fighter pilot who flew aboard two NASA Space Shuttle missions as a Payload Specialist.  In 1983, he and Ulf Merbold became the first Payload Specialists to fly on the shuttle.

Ernst Messerschmid: Prof. Dr. Ernst Willi Messerschmid (born May 21, 1945) is a German physicist and former astronaut.

Ulf Merbold: Dr. Ulf Dietrich Merbold (born June 20, 1941) is the first West German citizen and second German native (after Sigmund Jähn) to have flown in space.  He is also the first member of the European Space Agency Astronaut Corps to participate in a spaceflight mission and the first non-US citizen to reach orbit in a US spacecraft.  In 1983, he and Byron Lichtenberg became the first Payload Specialists to fly on the shuttle.

Friedrich Diercks: Friedrich Diercks (Also: "Friedrich Ernst") was born on June 18, 1796, at Burg (castle) Gödens near the village of Neustadtgödens.  In February 1814 he joined the Oldenburg Regiment of the Duke of Oldenburg, and he remained a soldier until June 1819.  In 1831, Friedrich Diercks  received land at Mill Creek in Austin County and began writing letters to friends in Oldenburg and Westphalia.  Upon reading about the favorable conditions in Austin's colony, he and his family set out for Texas.  On April 16 Ernst obtained a league of land on the west bank of the west fork of Mill Creek in Austin's colony.  Ernst became well known as a benefactor to new German immigrants and acquired the nickname "father of the immigrants."  Later on in life, he became a justice of the peace in Austin County and sold lots from his league to new immigrants.  The resulting settlement, Industry, was the first German town in Texas.   Ernst died in 1848.

Ernst Schering Prize: The Ernst Schering Prize is awarded annually by the Ernst Schering Foundation for especially outstanding basic research in the fields of medicine, biology or chemistry anywhere in the world.  Established in 1991 by the Ernst Schering Research Foundation, and named after the German apothecary and industrialist, Ernst Christian Friedrich Schering, who founded the Schering Corporation, the prize is now worth €50,000.

Ulf Herman: Ulf Nadrowski (born April 4, 1966) is a German professional wrestler, better known by his ring name Ulf Herman.  He is best known in the United States for his appearances in Extreme Championship Wrestling where he was part of The Full Blooded Italians faction from 1998 to 1999.  Herman is also known around the world for his time in the European independent circuit, most notably in the United Kingdom for Frontier Wrestling Alliance, and more recently 1 Pro Wrestling and Real Quality Wrestling (where he is currently RQW Heavyweight Champion).

Supporting paragraphs: Ulf Merbold Ernst Messerschmid
Answer: yes