There are four John Whipples in the 1790 census for Ipswich, MA

Name Family size
John Whipple 9
John Whipple 3rd 4
John Whipple Sr. 4
John Whipple 4th 9

I am having dificutly matching thes up with the Whipples listed on Whipple.org and to thoses lised in Vital Records of Ipswich, MA to the end of the year 1849.

Can someone please provide the date of birth for each of these four John Whipples?

Thanks,