Sheila Mullally was a widely known dress designer from Dublin who in 1961 had come to visit Gerd in the Mournes. Struck by the inspirational landscape, she worked with Gerd to develop a tweed that would be named The Fuchsia Tweed. This soon became a bestseller and the two women began a partnership that would endure for ten years.
In 1964, Sheila Mullally opened her own couture establishment in Ballsbridge, Dublin. She had built a strong American market that had fallen hard for the beautiful tweed fabrics designed by Gerd.
The relationship with Liberty began in December 1966. Gerd walked into the store without an appointment and managed to corner Mr Goldstone, the then buyer for the textile department. With great gusto Gerd presented her collection of samples, including Lace Tweeds and Trio Tweeds. Mr. Goldstone was suitably impressed, particularly with Gerd's colour choices. Liberty went on to become a loyal customer of Mourne Textiles ordering dark, rich colours for winter and bright spring colours for summer for many years.
Gerd also designed and developed couture tweeds, using Irish yarns, in jewel bright colours, for the House of Lachasse as well as Hardy Amies in London.