Mary I of Atlantica Alba

Mary I (b. Marie August Silkisk, 11 May 1314 in Copenhagen; d. 24 August 1373 in Kilgard, aged 69) was the first monarch of Atlantica Alba and the Personal Realms from the House of Silkeborg, ruling from 1333 until her death in 1373, a period of 40 years, the second-longest reign of any female monarch of Atlantica Alba, after Margaret II.