With two families of Darby Vassall descendants watching from front-row folding chairs amid a standing crowd of parishioners, guests and curious passers-by, the 11-minute film had its outdoor debut on the anniversary of Vassall's death, in 1861, and as part of a multimedia installation created by researcher and artist Nicole Piepenbrink, it is putting a public spotlight on some historical facts that many at the 1759 church became aware of only recently.