LOL- I don't know if you're doing thing right or wrong until I see what you have done. Again, I will ask you to please contact me via email so I can get to the 'bottom of the matter'. Normally taking info from public online trees is okay to begin with but in order to have good, documented family trees the word is document, document, document. I see you may be just in the beginning stages and if it shows that you are indeed a desc of Isaac and Sarah then it would be very beneficial to have you or a Raper cousin tested. As far as I know you are the only Isaac descendant I have ever communicated with so this could be a wonderful thing. We can't get any of Thomas and Caty's descendants to step up and take a dna test. Just in case you don't know there are at least 4 Rapers, James, Jesse, Thomas & Isaac who married McDaniel girls. William, these same Jesse, Thomas & Isaac are brothers. We don't know the first wife of William, his second was Jemima Adams. There is also some of us who aren't sure James who m. Susannah McDaniel is the 5th brother. I don't think he is but getting everyone else to agree with me would be impossible *G*.
As I said before I need to know what you've done precisely and don't want to continue the exchange on this forum so please email me....address above.