Question: Baron Prášil is the czech name for a character who is loosely based on what real baron?

Context paragraphs:
Baron Munchausen: Baron Munchausen ( ) is a fictional German nobleman created by the German writer Rudolf Erich Raspe in his 1785 book "Baron Munchausen's Narrative of his Marvellous Travels and Campaigns in Russia".  The character is loosely based on a real baron, Hieronymus Karl Friedrich, Freiherr von Münchhausen (1720–1797, German pronunciation: ] ).

't Was één April: When Mister Vlasman gets promoted from baking bread to making macaroni, he and his wife want to enter high society.  They could not be happier when a wealthy baron offers to introduce them into the high class.  What they don't realise is that this was all an April Fools' prank.  Unfortunately for the pranksters, things get out of hand when a real baron visits the Vlasmans.

Labe (hamlet): Labe (German: Elbe) is a hamlet in Šumperk District, Olomouc Region, Czech Republic.  It was founded by German settlers from Vrchlabí in 1521.  Vrchlabí is called "Hohen Elbe" in German language, thus the hamlet is obviously named after settlers' hometown.  Czech name is a consequence of bad understanding of name's evolution.  Officials believed the name was derived from Elbe River which is called Labe in Czech Language.

Velliscig: Velliscig (also view the variants) is an Austrian/Italian surname which is derived from the German name Welisch and the Czech name Velis.  Its origins can be traced back to a German noble family which lived in Bohemia (now Czech Rep).  In the 16th century, some members of this family moved to the village of Velindol, which is near the town of Gorizia, Italy.  According to research conducted, the surname Vellsicig may derive from the noble family Velišovští z Velišova

Rabí Castle: Rabí or Rábí is ruined castle in Southwestern Bohemia (Plzeň Region), on a prominent hill by the central course of the River Otava, in the foothills of Šumava region, 130 km from Prague, Czech Republic.  It is the largest castle (in terms of area) from all Czech castles.  Its name might derive from the German word "raben" ("raven"), or it could be mangled Czech name "vrab(č)í vrch" ("sparrow's peak").

Baron Prášil (film): Baron Prášil is a Czech comedy film directed by Martin Frič.  It was released in 1940.

Praga Sinfonietta Orchestra: The Praga Sinfonietta Orchestra (short Czech name: "Praga Sinfonietta") is a Czech classical orchestra based in Prague.

Egerberk: Egerberk (or "Egerberg", in Czech "Lestkov") is a ruined castle near Klášterec nad Ohří.  The name is derived from the German name of the Ohře river - Eger => Egerberg.  The Czech name is by the village Lestkov, now an administrative part of Klášterec nad Ohří.

Baron Prášil: Baron Prášil is the Czech name for the historical and literary character Baron Munchausen.

Czech studies: Bohemistics, also known as Czech studies, is the field of humanities that researches, documents and disseminates Czech language and literature in both its historic and present-day forms.  The common Czech name for the field is "bohemistika".  A researcher in the field is usually called a "Bohemist".

Supporting paragraphs: Baron Prášil Baron Munchausen
Answer: Hieronymus Karl Friedrich