Year 1843 (MDCCCXLIII) was a common year starting on Sunday (link will display the full calendar) of the Gregorian Calendar and a common year starting on Friday of the 12-day slower Julian calendar.

Franz Paul Lachner (2 April 1803 – 20 January 1890) was a German composer and conductor.

Lachner was born in Rain am Lech to a musical family (his brothers Ignaz, Theodor and Vinzenz also became musicians). He studied music with Simon Sechter and Maximilian, the Abbé Stadler. He conducted at the Theater am Kärntnertor in Vienna. In 1834, he became Kapellmeister at Mannheim. In 1835 he received the first prize for symphonic composition at Vienna with his Sinfonia passionata, and became royal Kapellmeister at Munich, becoming a major figure in its musical life, conducting at the opera and various concerts and festivals. His career there came to a sudden end in 1864 after Richard Wagner's disciple Hans von Bülow took over Lachner's duties. Lachner remained officially in his post on extended leave for a few years until his contract expired.

Lachner was a well-known and prolific composer in his day, though he is not now considered a major composer. His work, influenced by Ludwig van Beethoven and his friend Franz Schubert, is regarded as competent and craftsman-like, but is now generally little known. Among his greatest successes were his opera Caterina Cornaro (1841), his Requiem and his seventh orchestral suite (1881). In the present day it may be his organ sonatas (Opp. 175, 176, 177) as well as chamber music, in particular his music for wind instruments, that receives the most attention, though his string quartets and some of his eight symphonies have been performed and recorded. His songs, some of which are set to the same texts that Schubert used in his songs, contributed to the development of the German Lied.

Edvard Hagerup Grieg /ˈɛdʋɑɖ ˈhɑːgəɾʉːp gɾiːg/ (15 June 1843 – 4 September 1907) was a Norwegian composer and pianist. He is best known for his Piano Concerto in A minor, for his incidental music to Henrik Ibsen's play Peer Gynt (which includes Morning Mood and In the Hall of the Mountain King), and for his collection of piano miniatures Lyric Pieces.

Edvard Hagerup Grieg was born in Bergen, Norway on 15 June 1843. His parents were Alexander Grieg (1806–1875), a merchant and vice consul in Bergen, and Gesine Judithe Hagerup (1814–1875), a music teacher and daughter of Edvard Hagerup. The family name, originally spelled Greig, has Scottish origins. After the Battle of Culloden in 1746, Grieg's great-grandfather traveled widely, settling in Norway about 1770, and establishing business interests in Bergen.

Edvard Grieg was raised in a musical area. His mother was his first piano teacher and taught him to play at the age of 6. Grieg studied in several schools,^{[clarification needed]} including Tank's School. He often brought in samples of his music to class.^{[citation needed]}

Jean-Pierre Boyer (possibly 15 February 1776 – 9 July 1850), a native of Saint-Domingue, was a soldier, one of the leaders of the Haitian Revolution, and President of Haiti from 1818 to 1843. He reunited the north and south of Haiti in 1820 and also invaded and took control of Santo Domingo, which brought all of Hispaniola under one government by 1822. Boyer managed to rule for the longest period of time of any of the revolutionary leaders of his generation.

Born a free gens de couleur (or mulatto) in Saint-Domingue (modern-day Haiti) and educated in France, Boyer fought with Toussaint Louverture in the early years of the Haitian Revolution. He allied himself with André Rigaud, also a mulatto, in the latter's abortive insurrection against Toussaint to try to keep control in the south of Saint-Domingue.

After going into exile in France, Boyer and Alexandre Pétion, another mulatto, returned in 1802 with the French troops led by General Charles Leclerc. After it became clear the French were going to try to reimpose slavery and restrictions on free gens de couleur, Boyer joined the patriots under Pétion and Jean-Jacques Dessalines, who led the colony to independence. After Pétion rose to power in the State of Haiti in the South, he chose Boyer as his successor.