This looks as though it will be a useful research tool for those who have British ancestry: Connected Histories: Sources for Building British History, 1500-1900 | Institute of Historical Research:
the project will create a search facility that adapts to each resource (depending on whether and how the data is tagged, and on the text structure) to allow searching across the full range of chosen sources for names, places, and dates, as well as keywords and phrases. Background information about the search results will be delivered to the end user, and a facility to save and export search results for further analysis will also be provided. An online collaborative workspace will allow users to document connections between sources. The search facility will be expandable as new digital resources become available.