Protestant Exiles from France/Volume 2 - Book Third - Chapter 27 - Mercier
Mercier.
The surname of Mercier often occurs in memoirs. Jean Le Mercier, known to the learned as Joannes Mercerus, was a famous Hebrew scholar and critic; though a layman of good family, born at Usez in Languedoc. He married one of the Morell family, a native of Embrun, and died in the prime of life in the year 1570, leaving a worthy son Josias Le Mercier, whom Colomiés honours as the father-in-law of Claudius Salmasius (see Gallia Orientalis by Colomiés). In or about 1685 refugees from Saumur came to London, named Le Mercier. In 1691 Martha, daughter of René Bertheau, D.D., and sister of Rev. Charles Bertheau, was married in London to Lieutenant Claude Mercier, and left a son. There were Huguenot refugees of the name in Prussia, and one of the family removed to England — viz., Philip Mercier, born at Berlin in 1689, a painter praised by Horace Walpole, his departments of the art being portraits, and interiors of houses. After acquiring a considerable reputation in Germany, he accepted an invitation from Frederick Prince of Wales, and continued to reside in England till his death on 18th July 1760 (see Haag). Louis Mercier became pastor of the City of London French Church, in 1784; his death is recorded in the New Annual Register for 1811:— Died, “July 18, Rev. Lewis Mercier, pastor of a French Church in London, and a very eloquent preacher.” Some of the refugees of the Revocation period bore the title of Le Mercier de la Perrière; they came from Alençon.