- Bengt Kyhlberg
Swedish family of organ builders. They were active for five generations in Göteborg; in 1898 they began to work under the name ‘Olof Hammarberg’, the name of the firm through the 20th century. The first member of the family to build organs was Adolf Fredrik Pettersson (1811–72), who was originally a master carpenter; in 1848 he completed the rebuilding and enlargement of the organ in the church of St Karl Johan, Göteborg. His son, Gustaf Adolf Pettersson (1840–98), gained experience in his father’s workshop and with the Danish firm of Marcussen at Aabenraa; after his father’s death Gustaf registered as an organ builder in Göteborg, where he constructed mainly small pipe organs and harmoniums. His son, Olof Pettersson Hammarberg (1871–1942), was also a pupil at Marcussen’s and later trained in Germany and the USA. The 150 organs built during his directorship are all markedly Romantic in character....