section_path: Biography/Childhood and early education: 1818–1836
section_name: Childhood and early education: 1818–1836
paragraph_text: Childhood and early education: 1818–1836
  
  Karl Marx was born on 5 May 1818 to Heinrich Marx and Henriette Pressburg. He was born at Brückengasse 664 in Trier, an ancient city then part of the Kingdom of Prussia 's Province of the Lower Rhine. Marx's family was originally non-religious Jewish but had converted formally to Christianity before his birth. His maternal grandfather was a Dutch rabbi, while his paternal line had supplied Trier's rabbis since 1723, a role taken by his grandfather Meier Halevi Marx. His father, as a child known as Herschel, was the first in the line to receive a secular education. He became a lawyer with a comfortably upper middle class income and the family owned a number of Moselle vineyards, in addition to his income as an attorney. Prior to his son's birth and after the abrogation of Jewish emancipation in the Rhineland, Herschel converted from Judaism to join the state Evangelical Church of Prussia, taking on the German forename Heinrich over the Yiddish Herschel.
  
  Largely non-religious, Heinrich was a man of the Enlightenment, interested in the ideas of the philosophers Immanuel Kant and Voltaire. A classical liberal, he took part in agitation for a constitution and reforms in Prussia, which was then an absolute monarchy. In 1815, Heinrich Marx began working as an attorney and in 1819 moved his family to a ten-room property near the Porta Nigra. His wife, Henriette Pressburg, was a Dutch Jew from a prosperous business family that later founded the company Philips Electronics. Her sister Sophie Pressburg (1797–1854) married Lion Philips (1794–1866) and was the grandmother of both Gerard and Anton Philips and great-grandmother to Frits Philips. Lion Philips was a wealthy Dutch tobacco manufacturer and industrialist, upon whom Karl and Jenny Marx would later often come to rely for loans while they were exiled in London.
  
  Little is known of Marx's childhood. The third of nine children, he became the eldest son when his brother Moritz died in 1819. Marx and his surviving siblings, Sophie, Hermann, Henriette, Louise, Emilie, and Caroline, were baptised into the Lutheran Church on 28 August 1824, and their mother in November 1825. Marx was privately educated by his father until 1830 when he entered Trier High School (Gymnasium zu Trier), whose headmaster, Hugo Wyttenbach, was a friend of his father. By employing many liberal humanists as teachers, Wyttenbach incurred the anger of the local conservative government. Subsequently, police raided the school in 1832 and discovered that literature espousing political liberalism was being distributed among the students. Considering the distribution of such material a seditious act, the authorities instituted reforms and replaced several staff during Marx's attendance.
  
  In October 1835 at the age of 16, Marx travelled to the University of Bonn wishing to study philosophy and literature, but his father insisted on law as a more practical field. Due to a condition referred to as a "weak chest", Marx was excused from military duty when he turned 18. While at the University at Bonn, Marx joined the Poets' Club, a group containing political radicals that were monitored by the police. Marx also joined the Trier Tavern Club drinking society (German: Landsmannschaft der Treveraner) where many ideas were discussed and at one point he served as the club's co-president. Additionally, Marx was involved in certain disputes, some of which became serious: in August 1836 he took part in a duel with a member of the university's Borussian Korps. Although his grades in the first term were good, they soon deteriorated, leading his father to force a transfer to the more serious and academic University of Berlin.