Dôn

Dôn ( Welsh pronunciation:  [ˈdoːn]) is an ancestor figure in Welsh legend and literature. She is typically given as the mother of a group known as the "Children of Dôn", including Gwydion, Arianrhod, and Gilfaethwy, among many others. However, antiquarians of the early modern era generally considered Dôn a male figure.

In astronomy
Llys Dôn (literally "the Court of Dôn") is the traditional Welsh name for the constellation Cassiopeia. At least three of Dôn's children also have astronomical associations: Caer Gwydion ("the fortress of Gwydion") is the traditional Welsh name for the Milky Way, and Caer Arianrhod ("the Fortress of Arianrhod") being the constellation of Corona Borealis.