Sardinia
Origin
From Latin Sardinia, from Ancient Greek ΣαÏδώ, from its name in a pre-Roman language, *sard, *shard. It is connected by some scholars to the name of the Sherden or Shardana Sea People. A Phoenician inscription found in Nora and dated to the 9th century BC identifies the island as shardan.
The Cambridge Ancient History (ISBN 0521086914), page 369: "In the earliest Phoenician inscription found in Sardinia, that from Nora, probably of the ninth century B.C., although it is incomplete, the name of the island appears as Shardan (be-shardan), ..."