From a neighbor:

Our beloved neighbor, historian and all around great guy Tyler Potterfield passed away suddenly Friday morning. A memorial and celebration of Tyler’s life will be announced shortly.

Many Richmonders know Mr.Potterfield from his book, Nonesuch Place: A History of the Richmond Landscape.

From Times Dispatch obituary:

POTTERFIELD, Tyler, of Oregon Hill, Richmond, died suddenly on Friday morning, April 25, 2014. The loss of this good and beautiful man is unfathomable. His enthusiasm, love and devotion to his work and city planning, the James Riverfront, his cycling, gardening, hiking and community building projects were unbounded. He was a man of information and a writer and researcher of history and culture. He was devoted to his family and much loved in return by them; his wife, Maura Meinhardt; parents, Ruth and Tom Potterfield of Savannah Ga.; sister, Beth Hiers and her family of Destin, Fla.; and countless friends and colleagues, whose lives he generously embellished in his city of Richmond and on his beloved banks of Penns Creek.