Question: What is the birth date of this English scientist, whose laboratory burner design was later perfected by Peter Desaga into the Bunsen burner?

full_context: Document 1: Michael Faraday: Michael Faraday FRS ( ; 22 September 1791 – 25 August 1867) was an English scientist who contributed to the study of electromagnetism and electrochemistry. His main discoveries include the principles underlying electromagnetic induction, diamagnetism and electrolysis.
Document 2: AGA AB: AGA AB, previously "AB Gasaccumulator" and "AB Svenska Gasaccumulator", was a Swedish industrial gas company founded in 1904. Nobel Prize laureate Gustaf Dalén was instrumental in the success of the company. Important inventions included the AGA cooker and the Dalén light. In the 1990s AGA conceived and developed HiQ for specialty gases. In 2000, AGA was integrated into Linde AG.
Document 3: Faraday constant: In physics and chemistry, the Faraday constant, denoted by the symbol F and sometimes stylized as ℱ, is named after Michael Faraday. This is a magnitude of electric charge per mole of electrons. It has the currently accepted value
Document 4: Robert Bunsen: Robert Wilhelm Eberhard Bunsen ( ; ] ; 30 March 1811 – 16 August 1899) was a German chemist. He investigated emission spectra of heated elements, and discovered caesium (in 1860) and rubidium (in 1861) with the physicist Gustav Kirchhoff. Bunsen developed several gas-analytical methods, was a pioneer in photochemistry, and did early work in the field of organoarsenic chemistry. With his laboratory assistant, Peter Desaga, he developed the Bunsen burner, an improvement on the laboratory burners then in use. The Bunsen–Kirchhoff Award for spectroscopy is named after Bunsen and Kirchhoff.
Document 5: Teclu burner: The Teclu burner is a laboratory gas burner, a variant of the Bunsen burner, named after the Romanian chemist Nicolae Teclu. It can produce a hotter flame than a Bunsen burner.
Document 6: Rudolf Christian Böttger: Böttger was born in Aschersleben, Germany in 1806. After attending the primary school there he joined the school of the Franksche Stiftung in Halle an der Saale at the age of eleven. In 1824, Böttger started to study theology, but in parallel also attended the science lectures at the University Halle. The lectures of Johann Salomo Christoph Schweigger had a strong influence on him. Böttger left the university in 1828 and worked as cleric and teacher at different locations. The contact with Schweigger never faded and in 1831 Böttger decided to leave the theology career. He was offered a job at the voluntary association for chemistry in Frankfurt in 1835. His first major work in Frankfurt was the improvement of the electrotyping method for the production of printing plates. Böttger received his PhD from the University of Jena in 1837 and was appointed as full professor in Frankfurt in 1842. Böttger married Christiane Harpke in 1841, and they had eight children. He and Christian Friedrich Schönbein, a German-Swiss chemist, discovered nitrocellulose independently in 1846. Both scientists collaborated to earn money with the invention, but they were not successful. The development of the safety match in 1848 and the synthesis of the first organocopper compound, the explosive copper(I) acetylide CuC in 1859 were examples for his chemistry research. Böttger stayed at the University of Frankfurt am Main for the rest of his life, although he was offered positions at other universities. He died of a liver illness in 1881.
Document 7: Bunsen burner: A Bunsen burner, named after Robert Bunsen, is a common piece of laboratory equipment that produces a single open gas flame, which is used for heating, sterilization, and combustion.
Document 8: Meker–Fisher burner: A Meker–Fisher burner, or Meker burner, is a laboratory burner that produces multiple open gas flames, used for heating, sterilization, and combustion. It is used when laboratory work requires a hotter flame than attainable using a Bunsen burner, or used when a larger-diameter flame is desired, such as with an inoculation loop or in some glassblowing operations. The burner was introduced by French chemist Georges Méker in an article published in 1905.
Document 9: Faraday cage: A Faraday cage or Faraday shield is an enclosure used to block electromagnetic fields. A Faraday shield may be formed by a continuous covering of conductive material or in the case of a Faraday cage, by a mesh of such materials. Faraday cages are named after the English scientist Michael Faraday, who invented them in 1836.
Document 10: Faraday Prize (disambiguation): The Faraday Prize, named after British scientist Michael Faraday, can refer to:
Document 11: Faraday paradox (electrochemistry): The Faraday paradox was a once inexplicable aspect of the reaction between nitric acid and steel. Around 1830, the English scientist Michael Faraday found that diluted nitric acid would attack steel, but concentrated nitric acid would not. The attempt to explain this discovery led to advances in electrochemistry.
Document 12: Faraday's ice pail experiment: Faraday's ice pail experiment is a simple electrostatics experiment performed in 1843 by British scientist Michael Faraday that demonstrates the effect of electrostatic induction on a conducting container. For a container, Faraday used a metal pail made to hold ice, which gave the experiment its name. The experiment shows that an electric charge enclosed inside a conducting shell induces an equal charge on the shell, and that in an electrically conducting body, the charge resides entirely on the surface. It also demonstrates the principles behind electromagnetic shielding such as employed in the "Faraday cage". The ice pail experiment was the first precise "quantitative" experiment on electrostatic charge. It is still used today in lecture demonstrations and physics laboratory courses to teach the principles of electrostatics.
Document 13: Bunsen Peak: Bunsen Peak el. 8564 ft is a prominent peak due south of Mammoth Hot Springs in Yellowstone National Park, Wyoming. The peak lies on the east flank of Kingman Pass on the Mammoth to Norris section of the Grand Loop Road. The peak was first ascended by Ferdinand V. Hayden and Captain John W. Barlow in 1871, Bunsen Peak was not named until 1872 during the second Hayden Geologic Survey. E. S. Topping named the peak "Observation Mountain" in 1872 as well, but that name did not stick. The Bunsen Peak Trail with its trailhead just south of Mammoth is a steep 2.1 mi to the summit. Bunsen Peak was named for the German chemist Robert Bunsen, the inventor of the Bunsen Burner and responsible for early work on volcanic geyser theories.
Document 14: Peter Desaga: Peter Desaga was a German instrument maker at the University of Heidelberg who worked with Robert Wilhelm Bunsen. In 1855, Desaga perfected an earlier design of the laboratory burner by Michael Faraday into the Bunsen burner. The Desaga family held the right to market the burner for generations, as part of an agreement made with Bunsen. The Bunsen burner was essential to the invention of the spectroscope by Robert Wilhelm Bunsen and Gustav Robert Georg Kirchhoff.
Document 15: Faraday (disambiguation): Michael Faraday was an early 19th-century British scientist (physicist and chemist).
ground_truth: 22 September 1791