Bommer, Johann Jakob
- Friedrich Jakob
(flc1720–67). Swiss organ builder. His family came from Weingarten, near Lommis, in the canton of Thurgau. Together with Speisegger he was one of the most important organ builders in eastern Switzerland in the first half of the 18th century. The only certain biographical date is that of his marriage on 15 October 1725 in Kutná Hora (Bohemia) to Anna Daussek of Plzeň. Stylistically Bommer had close links with the Swabian and south German organ builders, but some characteristics of his work probably reflect his years as a journeyman in Bohemia. He built organs in Switzerland at Unterägeri (1720), Fischingen Abbey (positive; 1727), the Cistercian convent at Kalchrain (positive; 1730), Fischingen (rebuild; 1736), the Dominican convent of St Katharinental (1736–41; still extant), Kirchberg (1750), the Iddakapelle at Fischingen (1750), Eschenbach (1761), the Laurenzenkirche, St Gallen (...