The 1320s was a decade of the Julian Calendar which began on January 1, 1320, and ended on December 31, 1329.
The 1390s was a decade of the Julian Calendar which began on January 1, 1390, and ended on December 31, 1399.
1584 (MDLXXXIV) was a leap year starting on Sunday of the Gregorian calendar and a leap year starting on Wednesday of the Julian calendar, the 1584th year of the Common Era (CE) and Anno Domini (AD) designations, the 584th year of the 2nd millennium, the 84th year of the 16th century, and the 5th year of the 1580s decade. As of the start of 1584, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.
de Montgomerie (Montgomery) is a prominent family of Anglo-Norman origin, belonging to both French and British nobility. At the turn of the 12th century, the family was one of the leading families in England, with Robert de Bellême being the wealthiest and most powerful magnate in the Anglo-Norman world. The House was succeeded by the House of Belleme.