Deeds of Emancipation, 1800-1850, by Charlotte Cain.
Freed persons did not all have surnames. Those whose surnames are identified include

BARNARD, BOWLES, BURROUGHS, CURTIS, DUNCAN, FAUNTLEROY, FRANCIS,
HARRIS, HARRISON, HAYES, HEDGES, JACKSON, MONTGOMERY, MUNROW, NIGHT,
PATTERSON, PHILLIPS, WEST, WHARTON.

Two men acknowledged freeing their
own children:
Nathaniel HARRIS (1827) and Charles CURTIS (1828).

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Source:
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