South Ronaldsay
one of the Orkney Islands, Scotland, UK
South Ronaldsay is the most southerly of the Orkney Islands, with its main settlement at St Margaret's Hope, and a population in 2011 of 909.
Burray just north has always been joined by a sandy spit to South Ronaldsay. But during the Second World War a chain of road causeways, the "Churchill Barriers", was built by Italian POWs to protect Scapa Flow from seaborne attack; so South Ronaldsay, Burray and the two little islands of Lamb Holm and Glims Holm effectively became part of Orkney Mainland.
Mostly these islands are farmland raising cattle and sheep. But such strategic sheep! Churchill knew it was illegal to use POW labour for military construction, even if purely defensive. So the official line was that the causeways were just to help farmers move their sheep around, nothing military. And since they were only completed by the end of the war, and have only served as peacetime roadways, the great man was vindicated.
Like North Ronaldsay, South Ronaldsay is named for Rögnvald Kali Kolsson (1100-1158) the Earl of Orkney, canonised as St Ronald.