Conisbrough on Wikipedia.
Much useful information (and many photos) here.

The Baptist Church stands on Old Road at SK 5092 9862. A transcribed newspaper report dates its opening to 1898. © David Regan (2021). Link.

The former Methodist Church (originally Wesleyan) on Chapel Lane has a date-stone for 1876. SK 5126 9850. © David Regan (2021). Link. Grade II listed.

The Mortuary Chapel in the cemetery on Sheffield Road at SK 5063 9784. It pre-dates a map of 1902. © David Regan (2021).

An old engraving showing the "Old Church" at Conisbrough. I think it unlikely that it is St. Peter (see the link for an extensive history). Howard Richter has been considering this, and he agrees that it isn't St. Peter - in fact he reckons that the tower to the right of the castle in the distance is St. Peter. The position of the ruin across the river from the castle implies that it lay in what was then Sprotbrough (now Cadeby). Possibly a chapel of ease suggests Martin. He thinks the site may now lie beneath the site of Cadeby colliery or the associated railways (now also closed and levelled). Can you come up with a definitive identification? From the Colin Waters Collection.

A Primitive Methodist Chapel stood on Old Hill, at SK 5134 9855. It's dated here to 1864. It also mentions an old wall at the rear of the building on the site today. Does anything of the chapel survive? Both © David Regan (2021).

The former St. Andrew's Mission Hall (1929) on Old Road, as seen by Streetview in 2019. An old photo of it can be seen here. SK 5045 9845.

St. Peter (O). Another view. SK 5121 9875. Both © David Regan (2021). An old postcard view, from Reg Dosell's Collection. Link. Grade I listed.