Erik Adolf Setterquist (1809-1885) was a prominent Swedish organ builder whose career spanned several decades and locations, including Hallsberg, Strängnäs, and Örebro. Starting as a foster son and apprentice to organist and organ builder Johan Samuel Strand in Vingåker, Setterquist worked with Pehr Zacharias Strand in Stockholm before establishing his own organ-building practice around 1835. After gaining experience and building 16 organs, he partnered with Per Larsson Åkerman in 1857, forming a firm in Strängnäs. Together, they built notable organs, including one for Strängnäs Cathedral. Setterquist eventually returned to Hallsberg and later moved his business to Örebro, where he expanded his operations and incorporated innovative machinery into organ building.

Setterquist's work transitioned from the classical Swedish organ style to a more continentally inspired, late-romantic style, positioning him alongside Åkerman as a leading figure in Swedish organ building during the late 19th century. He constructed over 600 organs across Sweden, with significant instruments from his early period found in churches such as Öja, Värmskogs, and Ödeby, and from his romantic period in Arboga Sankt Nicolai and Ösmo churches. His firm, E.A. Setterquist & Son, continued to thrive under his son Gustaf Adolf Setterquist, contributing significantly to Sweden's organ-building legacy.

https://sv.wikipedia.org/wiki/Erik_Adolf_Setterquist