Hi Bill,
Definitely the same family - in 1850 Jacob (age 8) is in the household with sisters Rachel A (age 5) Hannah J B (age 3)
and parents Thomas, an Oysterman, and Eliza. Interesting that Eliza is a McDonald - on the same page - in fact two adjacent households - are two McDonald families, Thomas (age 56) - her father? and John (age 24) her brother?
Feel free to email me directly
vellturo@sover.net - would like to get more info on your line.