I am researching Sarah Matlack Brinton born 1848 PA, and her husband William Blackburn born 1840 Ireland, resided Penn Tsp, Westmoreland County PA from at least 1870 to about 1905 when the family moved to CA. Offspring of Sarah and William were: William John Blackburn (my namesake and grandfather), Samuel Z. Blackburn, Grace (married Paddison), May (married Simmons) and Eleanor. William John Blackburn III (yes, there is a William John Blackburn IV) Mt. Shasta, CA