A typical family-plot arrangement of large monument and small headstones, but Father Pitt was struck by the harmonious design of the monument, which echoes the volutes of its Ionic columns in larger volutes on top. Three of the headstones also have matching volutes. Even the steps have carved volutes.
Unfortunately, those matching headstones became impossible to get, so more recent Henrys have had to make do with standard granite blocks. That is one of the sacrifices we make for the convenience of mass-production monuments.
John Henry died in 1902, and that is probably about the date of the monument.