OAK, Sarah, d. of Jonathan and Sarah, [born] Jan. 12, 1752. O.S. [1751 started in March, but 1752 started in January. This was, technically, a separate change than that from the Julian to Gregorian calendar, which took place in Sept. 1752. The "O.S." here presumably only applies to the later, meaning the date was not adjusted for the 11 day shift. But it appears that it was the year was still the modern 1752.]
