These are my gr gr gr grandparents, who are buried in the Onarga, Illinois cemetery. According to the tombstone Jackson was born in 1830 and died in 1899. Sarah was born in 1836 and died in 1894. I am currently working on DAR supplemental papers to add Jackson's grandfather, William Margerum, to my ancestors. I believe the marriage of Jackson and Sarah took place Jan 1, 1853. I was wondering if anyone else was working on this particular line and might know if a marriage record exists somewhere.