Andros
The ancient Pictish-Scottish family name andros comes from the baptismal name Andrew which in Greek means manly. The name was popular as both a personal name and a surname, likely because it was the name of Scotland’s patron saint.
In Gaelic the name is Aindrea and Anndra which again means manly. In various documents, andros has been spelled Andrew, Andrews, MacAndrew, Androw, Androe, Andro and many more.
This family name was strongly associated with the Scottish Clan Ross. It was originally known as the Clan Siol Andrea, meaning the clan of Andrew.
From about the year 1100 the Andrews moved south to the Dumfriesshire area of southwest Scotland.
Duncan Andrew, Chief of the clan, rendered homage to King Edward I of England in 1296.
See:
http://www.houseofnames.com/xq/asp.fc/qx/andros-family-crest.htm