Clarinda was the daughter of William Wills Pearce and Mary Shephard. I have no further info, just questions. My ancestors were married at Greensburg in 1839...George W. Paul and Verlinder Calloway. Her father was one of 3 men who laid out the town of Hartsville, Indiana. I'm told the two counties (Bartholomew and Decatur) have had some line changes. Some of their history may be found between the two counties??
Secondly, I believe the Paul you are researching is descended from the Paul's who originally lived near or at Redstone Old Fort in PA. Their leader, Michael Paul (father of Colonel John Paul) brought 200 families down the Ohio by flat boat and settled near or at Corn Island.
Michael Paul settled near there and died just after 1800. Meanwhile at least two sons, John and Jonathan (2 separate people) went to Ohio and lived some years. (Your Paul is descended from the younger one named Jonathan and his wife, Eunice Griffin)
When their father died they returned to KY to settle his estate. While there they arranged with other family members to leave KY and migrate to Indiana. Many of their descendants are found there on census records and some identified themselves according to their progenator.
Michael had several brothers and not sure how many sisters. They also followed Michael into the wilderness. Sorting them out will require DNA.
On your Paul research you might check on a religious society known as the Friends. Sarah Paul (Michael's wife) was involved in that. The 200 families that moved to Ky, of that some went to Indiana and started a religious community called Hope. That's all I know, but would like to learn more. My Paul's lived very close around there very close...perhaps part of this. Perhaps not.
To confuse that Paul research further, there were Paul's of Scots Irish descent living near them. perhaps relatives, but from another country. Oddly, it is entirely possible they were all related regardless. Some even lived in China and Cuba according to some of my finds. But that's another story.
Clarinda Pearce was born in Ontario, NY in 1806.
I'm not sure who your Sarah Paul is/was but there was a Sarah Paul on my family tree as well. She too is a mystery person born around 1841; probably at Greensburg.
There is another Sarah Paul who was the daughter of John P. Paul and Eunice Abell. Sorry I'm not much help. More questions than answers. I do have a very old genealogy paper written in the 1800's on this family and might be able to find it. That is how I discovered John and Jonathan. That was really confusing until that discovery.
Jonathan lived at Decatur county. John lived at Madison county. But beware of linking people just by locale as their kids and grandkids moved all around. And because there were so many brothers, cousins, aunts, uncles, etc. it will take DNA as stated earlier....to figure it all out.