Sieur de la Tour Thomas Dallam

Thomas Dallam, also known as Sieur de la Tour, was an English organ builder born around 1635 whose work was carried out in the French region of Brittany. He belonged to the Dallam family, a dynasty dedicated to organ building, and his name is associated with a tradition that continued on Breton soil.

Following the return of his father, Robert Dallam, to England in 1660, Thomas maintained the prestige of the family workshop in Brittany. Between 1667 and 1696 he built instruments in localities such as Daoulas, Locronan, Sizun, Pleyben, Landerneau, Brest and Morlaix, among others. The cases of ten Dallam organs survive in the region.

The organ of Daoulas Abbey was still considered one of the finest in north-west France as late as 1790, which gives some idea of the reach of his work. The date of his death is not known with certainty, though it is placed in Brittany after 1720.