date determined by subtraction: Feb. 5 1789 minus 41 years - 5 mo - 17 days equals a day in august 1747 (secondary source)

Brakey is mentioned as a dau. in her father's will of Sep 1782, proved 1783

no baptism found in :
U.S., Presbyterian Church Records, 1701-1970
Pennsylvania Churchville North and Southampton Reformed Church Register 1737-1820
Yet her siblings are there.

It is noteworthy that the records which look to be a transcription, seem to have a clerical error. Examine the sequencing... the flow of dates are inconsistent in that 1747 abruptly stops in April and then jumps to June 1748. This may explain why Brakey is missing. I would hop that there is an original register somewhere that still shows Brakey's baptism between August 1747 and June 1748.

either in Southampton or Northampton townships