Question: I am searching for a series of distant cousins of my great-grandmother. One of whom I understand was an architect named Francis R. Allen, I know simply he was a child in the 1850's from correspondence from Boston.
Answer: You are correct Francis R. Allen was a Boston born architect. A good resources from the Society of Architectural Historians can be found online at: http://www.sah.org/index.php?src=gendocs&ref=BiographiesArchitectsA&category=Resources This link will bring you to the page where Mr. Allen is listed alphabetically.