Hi everyone,   I'm interested in any genealogical information people may have on the Mercer family that lived on Queen Street in Southwark in the 1840s (33 Queen Street is the old street address).  This is the Mercer family that served as the basis for George Lippard's novel The Quaker City, or the Monks of Monk Hall.  I have all the contemporary newspaper stories about the Singleton Mercer-Heberton murder, but am interested in other members of the family besides Singleton, especially: Thomas Mercer (father), merchant, who died in 1848, age unknown, probably 60+. Sarah Gardner Mercer (sister), born ca. 1832-1833, death date unknown.  There was another brother and sister, whose names I do not have.  There was another Singleton Mercer, who lived into the 1890s and was an officer of the Farmers' and Mechanics' Bank.  He is buried at Laurel Hill Cemetery.  I'm not sure what his relationship was to the Thomas Mercer family.    I'm particularly interested in finding out whether Sarah married, when she died, and where Thomas, Sarah, and other family members may be buried.  They're not in Laurel Hill, where their son/brother Singleton (d. 1855, aged 35) is buried under the Yellow Fever Volunteers' monument.  I'd appreciate any help anyone might be able to offer.   Thanks, Tom Keels