Joseph Cass - birth documentation

Here is documentation of my 9th great grandfather,  Joseph Cass who was born in Hampton, New Hampshire August 5, 1656.  

Joseph was the son of my 10th great grandparents, Martha (Philbrick) and John Cass.

This birth record was transcribed by the State of New Hampshire in 1906.

I have seen other family trees that indicate Joseph was born October 5, 1656, but nothing to verify that date.