Restoring an Old Cemetary Looking for Any Informaion

There are about 25 graves in the "Old DUBOIS Cemetary". The cemetary lies about 300 yards from our very old rural home in Hanover Township, Union County, Indiana.

There are several families represented there. Each time my husband and I go over to see and dig more we find another headstone. We have found several more than are listed on the most recent list of those buried there. Some stones are up to a foot deep in the soil. We have learned so much about cemetaries! The oldest grave we have found is dated 1830! There people buried there who were born in 1777!

Names we have found:
JACOB DUBOIS d.1850
ANN DICKENSON DUBOIS d.1860
JACOB SAMPLE d.1840
JANE HUSTEN SAMPLE d.1856
WILLIAM COOMBS
CHARLES FOSTER d.1838
JAMES MULLIN d.1839
FRAZEE CLARK d.1836
AGNES GREER d.1867
HESTER DUBOIS AUSTIN d.1846
REBECCA CORY d. 1846
MARY SUTTON d.1887

Any help at all would be greatly appreciated!!
I am happy to share any informaion I have.