Citation - South Carolina Gazette (Crouch): 1775.04.18

SCGCJ.775.028
18 Apr 1775:11 (490)
Mr. Windsor, will open his school again, on Monday the 24th
of April, next door to Roger Pinckney, Esq; for the
instruction of the youth of both sexes in reading, writing, 
arithmetic, polygraphy, &c.  Having proper accommodations in
his family, he designs to board a few young gentlemen.
  N.B. Mrs. Windsor continues to instruct young ladies upon
the harpsichord.