South Ronaldsay on Wikipedia.
 

Barswick. This is possibly the South Ronaldsay Free Church. ND 442 856. © Martin Briscoe.

Burwick, St. Mary. Kevin Price advises (2011) that this is now closed for regular worship. ND 4410 8427. © Bill Henderson. Shown on O.S. maps a little way east of the church is a burial ground - and shown within it is Site of St. Colm's Chapel, at ND 4417 8427. Nothing can be seen on a 2022 Streetview (to the left of the road) - this source says that any surviving signs are very slight.

Herston, previously a Mission Chapel. ND 421 907. © Martin Briscoe.

Kirkhouse, St. Peter. ND 471 909. © Martin Briscoe.

St. Margaret's Hope, St. Margaret (Church of Scotland). ND 450 934. Gospel Hall (the building with the blue door). ND 448 936. Old church near the village. ND 458 936. All © Martin Briscoe.