I don't know any of these people, but just to clarify the points I think you are trying to make...
It really helps if you keep the dates in order from older until more recent, and also keep all the information about one individual together in one information block. It gets really confusing trying to figure out who "he" and "she" are referring to, when there are all kinds of names being mentioned.
Eliz Kinsman was b. 1790, sister Savina b. 1793, sister Margaaret b. 1797,brother Caleb b. 1802. Caleb had daughter Achsah (maybe Aschah ?) b. 1831 and son John Crocker b. 1833.
Eliz md. 1814 Richard Osborn.
From all the above, it seems that (mother and father) married around 1789, so they would likely have been born in the period 1760-1769. If Caleb had children starting 1831, he must have married ca. 1830 around age 28. Elizabeth obviously married at age 24. It may seem obvious and silly to state things this way, but belive me, when you have been going through 100's or 1000's or b/m/d (born, married, died) statistics, you NEED to have things put in a regular order to keep from going nuts !
Do you know who were the parents of Eliz and her siblings, WHERE they were born or lived, and WHEN they were married or died ? All this would help figure out WHO they were.