Hoskinstown is a small village on what was once the Queanbeyan/Captains Flat railway line. The line is still there, over the back of the church, but it is pretty quiet these days.
To find the cache, you will need to first find the grave of Thomas Coffey. It should not be too hard as it is mostly covered by a rose bush (no thorns) in the center of the graveyard. He died AB Nov CEDF aged GH.
Next, find the pillar-shaped grave of John Robert Wilson. He died J Nov KLMN aged 51.
The cache is located at S35 25.G(E-B)(F-N) CS=24 E 149 27.J(D-E)(L-N-K-M) CS=25