Andrews,
There is nothing in the Emancipation Records on this name, but I did come across something in another book I have by William L. Byrd III, entitled "North Carolina General Assembly Sessions Records: Slaves and Free Persons of Color, 1709 - 1789". This books includes many records for Slaves that were executed in NC history for various reasons and although it is a very small entry, I'll bet this is yours because the sentence is something I think that would be given to a Black man for committing what they might have considered a "crime."

General Assembly Sessions Records, 1709 - 1782, Pg. 13 -
Committee of Claims -

SAM, a Slave

7 March 1764
JOHN SIMPSON late Sheriff of Pitt County was allowed four pounds for castrating, nursing & curing a Negrow Fellow called SAM, belonging to the Estate of CAPT. BUCK, dece'd, as p Acct. Filed.

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As background, apparently whenever a slave was executed by the State, the owner was paid by the State as approved by the General Assembly, for the value of the Slave. The Sheriff was entitled to expenses for the care and execution of the convicted Slave. The above doesn't say why the Slave was given such a sentence, but as I said above, it would very likely be something like having a child with a White Woman, especially since he was a Slave. This entry also doesn't state what happened to Sam, but most of the other entries with this kind of sentence does indicate that the Slave died of his wounds.

Deloris