You may want to contact annewilding197. She has a tree with Sabin and his parents. the "Ann" already mentioned apparently is Ann McRae, her husband was Seth Kimball. Look here for more info...https://novascotiagenealogy.com
It doesn't have John or Sabin's birth record, but apparently Jane is lying about her age (born in 71, not 74....a very common thing for single female 20 somethings....to lie and say they were younger).
If you want more help, ask me in a couple days or later.