William M. Whitney - Final resting place for William M. Whitneyl

According to records I received from a cousin I am questioning the final resting place for William M Whitney. What I received is that William (according to the information I received from the cousin) is buried in two different Cemeteries. One in Oakwood and the other is Griffen Mills both in Aurora, New York. The Oakwood states that William is laid beside his first wife Delelah and the Griffen Mills indicates he is buried there with his second wife Elizabeth. Could you please help me to clear up this matter. I thank you in advance for your help in this matter.