Teacher, writer, historian left strong mark on Unionville, Kennett areas By Mike McGann, Editor, The Times Unionville and Kennett are mourning the loss of Mary Larkin Dugan, center, seen here in a 2010 photo at the dedication of a Harriet Tubman mural in Kennett Square. Dugan died Monday after a long illness. The Unionville and Kennett areas are mourning the loss of a beloved teacher, writer and...