[5] The grove for which it is named grew close to the township's southeastern corner, near what is now the intersection of county roads 400 West and 300 South.

[6] It originally covered about 1,000 acres (4.0 km2) and contained an abundant variety of trees, including oaks, walnuts, hickory, dogwood, haw, paw paw, sycamore, quaking ash, ironwood, water beach, elm, linn, poplar, ash, sassafras, locust, etc.

Parish Grove was home to a group of local Pottawatomie Indians led by Chief Parish (real name Pierre Moran), the son of French trader Constant Moran and a Kickapoo woman.

Parish died circa 1826 and is buried in the grove, though the grave is unmarked.

[3] Almost all of Parish Grove Township is open farmland, divided into roughly square mile blocks by regularly spaced county roads.