WATERBURY — On Sunday, May 7, at 3 pm, Dr Robert L. Rafford will offer a lecture called “Your Family Tree” at The Mattatuck Museum, 144 West Main Street. Dr Rafford, of Northeast Genealogy, will discuss family roots, research methods and how the Internet can assist in a search for your family’s history. Suggested donation is $5; call 203/753-0381 for reservations or additional information.