Dolly is often short for Dorothy - which could be the real name of Dolly L. Allen.also I have seen it listed as Dolly J. Allen -
checking through google search for Whiting Allen (advanced search and exact phrase) I believe he and Jedidiah may be buried in Oak Grove and St. Mary Cemeteries in Delaware, OHas well as some of their children.
This is not my family, but always interested in helping Allens from VT find family. My Allens moved from CT>VT>WI>Iowa Jonathan Allen and Walter Jonathan Allen.
Hope you find info on Dorothy or Dolly Allen. Is there a register of births that lists her? Does it give exact name and place of birth?What proof? Is there a census record that shows her name before marriage?