Records go back to 1348. From the Guild‘s website: "In its widest sense mercery could describe all merchandise, although in London the term evolved to mean the trade specifically in luxury fabrics, such as silk, linen, hemp-cloth and fustian, and in a large variety of miscellaneous 'piece goods' such as bedding, headwear, ribbons, laces and purses."
At Queen's Theatre you can see a Mercers' maiden. This is the symbol of the Mercers' Company and was used to mark their property. It can be seen on various buildings across London. Richard R gives more information.
This section lists the memorials where the subject on this page is commemorated:
Mercers' Company
Commemorated ati
Coburg Dwellings
Coburg Dwelllings This block was built by the Mercers Company in 1904. It was...
Mercers’ Maiden
Discovering London suggests that this might be the oldest inscription in London.
Widening Long Acre
Eight feet of ground from the stone of this house were given by the Mercers' ...
Other Subjects
George Hay and Company
Chartered accountants and registered auditors. They are based at the same address as the plaque and presumably contributed to its erection.
Kindersley Workshop
From the Workshop's website: "David Kindersley, lettercutter, sculptor and inventor, started his workshop near Cambridge in 1946, having been apprenticed to Eric Gill. He was joined in 1976 by Lida...
Alannah Weston
Alannah Elizabeth Weston was born in January 1972 in Dublin, Ireland the daughter of Galen and Hilary Weston. Her Wikipedia page gives details of her life.