My interest in the cemetery was sort of backwards - most people are wanting to know about the people buried there. Me, I was just trying to figure out where it was! As you've also found, remarkably little information about it available.
I was interested as my Mum's Aunt Minnie and her husband William B. Holder had a farm - maybe the same one you have now???? He farmed there in the early 1900s, dying in middle 1920s. And all I knew of the location was that the Green Cemetery was on their land. I *did* finally find a land map that located their property. I don't have my notes here, but it was, I think, on Joseph Rd, to the west of the intersection with Fields Store Rd, on the north side of Joseph Rd. Does that sound about right? I *think* it would be before Joseph takes that 90 degree turn to the left to go south, but would have to find the notes to be sure.
Both my Ogg and Wallingford families were all through this area - Wallingfords up closer to Fields Store, Oggs over near the Montgomery Co. line with the Alfords, along FM 1488. Hegars just south of you (some, appropriately, near Hegar!). Loyd/Lloyds in that same area (marrying into the Alfords and the Hegars variously!)
Sure seems a long way from New Zealand - wish I was there to walk around some of these places...