Type of survey: Resistivity; Instrument: Geoscan Research RM-15; Prospection depth: 0.5 m; Sampling interval: 1 x 0.5 m and 0.5 x 0.5 m; Area surveyed: 60 x 80 m; Date of survey: 5/97 & fall/98.
Comments:The Royall House is a National Historic Landmark.
The current property is a small portion of Governor John
Winthrop's 600 acre grant obtained from the Crown in 1631. Isaac
Royall Sr. brought his family and 20 slaves to the house from
Antiqua in 1732, building the mansion and slave quarters.
Believed to be Loyalists, they fled to England in 1775. General
Stark used the house as his headquarters during the siege of
Boston that year. The resistivity data reveal clear indications
of landscaped garden features beneath the present paved walkways
and trees, indicated in red. A number of highly resistant linear
features are shown, probably former brick walkways, that suggest
a formal, planned garden. Oval and circular features within also
are apparent that may point to the locus of former flower beds
and other garden features..
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(updated: 7/00)