1) Greek girl name 
Astrea may be: Astrea may also refer to: ...
(from the article `Urfé, Honoré d`) French author whose pastoral romance L`Astrée (1607–27; Astrea) was extremely popular in the 17th century and inspired many later writers....de Balzac. This ideal revived the medieval tradition of courtly love, as expressed in the novels of Honoré d`Urfé. The succ...
The Astrea was a Swedish patrol boat of 105 tons displacement launched between 1908 and 1910 as a torpedo boat. The Astrea had a top speed of 25 knots and was armed with one 57 mm gun and one 18 inch torpedo tube.