The will of Sarah Branwood states her daughter Jane married James Bleckley Esq. This means that 2 generations of men named James Bleckley were married to wives with the first name of Jane which I think has lead to some confusion. James Bleckley Esq. married Jane Branwood and James Bleckley Jr. married Jane Wilson. This means that the tree linkage of Joseph Wilson to Sarah Branwood needs to be reconsidered.
The second point is that the will states Sarah Branwood had three grandchildren named Sarah, Mary, & Agnes Bleckley. However there is no mention of grandchildren named James, William or David Bleckley; James being James Jr. our ancestor. So that brings up the possibility that Jane Branwood Bleckley was not the mother of James Jr, William or David and Jane Branwood Bleckley was not the first wife of James Bleckley, Esq.