There is an Oak Farest Cem in Richland Parish and one in Olla in La Salle Parish.
In the Uplands region of northern Louisiana, Caldwell Parish was formed in 1838 from Catahoula and Ouachita Parishes. Its parish seat, Columbia, is on US-165 about 140 miles NNW of Baton Rouge. Caldwell is bordered by the parishes of Ouachita, Richland, Franklin, Catahoula, La Salle, Winn and Jackson.
The US Gen project had a Oak Forrest listed in Caldwell, but in Olla.http://www.geogen-la.com/parishes/caldwell.htm