details of means of family history research before the advent of computers and online resources, correspondence with overseas researchers, Nagle family histories, copies of "Nagle Family Newsletter", inventories of resources available to researchers in the National Library of Ireland.

details of connections between Nagle's and Ffrench's.

letters from the "Office of the Chief Herald, Genealogical Office, State Heraldic Museum", research into Ffrench and Nagle families.