I agree Judson and Milton were brothers.They were both in the Jesse Jr. and Martha Jane Small Purcell household in 1860 and 1870.I sounds as if you may know more about this family than I.I do not have any information on the parents of Jesse Sr.I believe he married Delilah? Freeland in Knox/Daviess County on 12 April 1812.
In 1807 the following persons were listed on the Knox Co., IN voters list. William Purcell Jese Purcill Francis Purcell Aron Freeland Jacob Freeland
Jesse Sr. shows up in the household of his daughter Indiana Purcell Batchelor in 1850 and 1860.
I have very little information beyond this. It is encouraging to see someone else is interested in this family.
If I can answer any questions regarding any of the above please contact me.If anything above is incorect PLEASE contact me.I can provide PDFs of most of the census pages cited above.