Automatic translation from Danish.

Unknown painter, 19th century. Portrait of Queen Louise of Prussia (1776-1810) in profile, copy after Johann Heinrich Schröder (1757-1812), oil on canvas, signed on the back, this later inscribed 'Thomsen 1829'. 61 x 51 cm. Without frame. Has cracks, retouching, superficial marks, dents in the canvas, needs cleaning.
Probably originates from Glücksborg, comes from a family that lived nearby and had connections to the castle.