I am researching the children of John & Jeannette (Chambers)Clarkson. They had 10 children: John Jr (1850-1905), David (1854-1908), Thomas (1856-?), Elizabeth (1858-?), James "Thomas" Clarkson (1860-1921), Andrew (1862-1948), Margaret Clarkson (1868-1915), Christina Clarkson (1869-?), William Pollick (1873-1935), and Ellen (1875-?)... I know that they moved to Tioga County, Pennsylvania around 1880, and then some moved into Clearfield County, Pennsylvania about 1900... I have been able to trace a few of the lines but not all. If anyone has any information on any of these, I would greatly appreciate it.... The James Clarkson is the line that I am directly from. I was also able to trace the David Clarkson moved to Michigan where he died in 1908, but it listed who his parents are but no other information.