Design for Mantelpiece Incorporating Painted Panel, 3 Lilybank Terrace, Glasgow, Scotland

Margaret Macdonald was a British designer and decorative artist whose spare, linear approach to metalwork, textiles, and interior design proved foundational to early modernism. Working alongside her husband Charles Rennie Mackintosh in Glasgow during the 1890s and early 1900s, she developed a distinctive aesthetic combining stylized organic forms with geometric restraint, executed in repousse metalwork, gesso panels, and embroidered textiles. Her work was exhibited internationally and influenced the development of Art Nouveau and proto-Modernist design.