Barony of Tir-y-Don
The Barony of Tir-y-Don's lands cover the middle peninsulas of Virginia including the cities of Hampton, Newport News, Poquoson, Yorktown, Gloucester, and Williamsburg. It is Atlantia's fifth Barony and dates from Atlantia's time as a Principality
The first SCA activities within what became Tir-y-Don occurred in 1975 (AS IX) with its first event on March 1st. Tir-y-Don became an official Canton within the East Kingdom in July of 1976. Five years later it became a Barony on April 25, 1981, a week before Atlantia became its own Kingdom on May 2, 1981. For more details see Tir-y-Don's history page on its website.
The name "Tir-y-Don" is Welsh. "Tir" means "land". "y" means "of". And "Don" is the Welsh goddess of air and sea. We frequently gloss over the religious reference and translate our name as "The Land of the Sea and Sky". The colors of the field on our device capture this as well: green for land, white for sky, blue for sea. References: Britannica entry on Don, Pagan website on Don.
Since "Don" is a proper name it is capitalized. "y" is a preposition (of) and is not capitalized.
Tir-y-Don's website is available at http://tirydon.atlantia.sca.org