The spelling Paulina is correct spelling. Paulina is a Wilson family name and has been repeated for many generations. Some who have the name Paulina are called Lina or Linney.
I have an extensive documented database on all my families and have been researching for many years. William Wilson father was William Wilson I have an early court document that listed William Wilson and son William Wilson. Rachel's mother is Sarah Blevins born 1785 in Virginia and died after 1860. She can be found on the early 1830 Lawrence County, Kentucky Census and on the Carter County Census 1850-1860.