"Welcome to ROLLCO, a site providing records of Apprentices and Freemen in the City of London Livery Companies between 1400 and 1900". ROLLCO was created through the collaborative partnership between the Centre for Metropolitan History, The Bowyers' Company, The Clothworkers' Company, The Drapers' Company, The Girdlers' Company, The Goldsmiths' Company, The Mercers' Company, The Musicians' Company, The Salters' Company and The Tallow Chandlers' Company. The objective of the ROLLCO project is to "provide a fully searchable database of Livery Company membership over time". Databases searches can be made using company names, person names, occupations, residences, dates, or roles. Each entry is comprised of the member's game, company, role, status, event, and date. "A future update" of the ROLLCO project will provide the functionality "to allow researchers to view the ROLLCO data - as a whole - in a number of different forms, to elucidate the patterns of historical Livery Company membership across multiple Companies. Aggregated statistics, dynamic visualisations and charts drawn 'on the fly' will be available on this page from later in 2014".
Records of London's Livery Companies Online (ROLLCO)
Centre for Metropolitan History at the Institute of Historical Research (University of London)