''Note: There is also a "Sweyn Holm" off
St Ninian's Isle, Shetland''
Sweyn Holm is a small island in the
Orkney Islands, next to
Gairsay.
It is thought to be named for
Sweyn Asleifsson
Sweyn Asleifsson or Sveinn Ásleifarson ( 1115 – 1171) was a twelfth-century Viking who appears in the '' Orkneyinga Saga''.
Early career
Sweyn was born in Caithness in the early twelfth century, to Olaf Hrolfsson and his wife Åsleik. According ...
(Sveinn),
who was connected with Gairsay or possibly a corruption of "servant's island" in Norse.
Geography and geology
Sweyn Holm is made up of red
sandstone
Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks.
Most sandstone is composed of quartz or feldspar (both silicates ...
.
References
Uninhabited islands of Orkney
{{Orkney-geo-stub