Old Saxon, also known as Old Low German, was a Germanic language and the earliest recorded form of Low German (spoken nowadays in Northern Germany, the northeastern Netherlands, southern Denmark, the Americas and parts of Eastern Europe). It is a West Germanic language, closely related to the Anglo-Frisian languages. It is documented from the 8th century until the 12th century, when it gradually evolved into Middle Low German. It was spoken throughout modern northwestern Germany, primarily in the coastal regions and in the eastern Netherlands by Saxons, a Germanic tribe that inhabited the region of Saxony. It partially shares Anglo-Frisian's (Old Frisian, Old English) Ingvaeonic nasal spirant law which sets it apart from Low Franconian and Irminonic languages, such as Dutch, Luxembourgish and German. The grammar of Old Saxon was fully inflected with five grammatical cases (nominative, accusative, genitive, dative, and instrumental), three grammatical numbers (singular, plural, and dual), and three grammatical genders (masculine, feminine, and neuter). The dual forms occurred in the first and second persons only. Characteristics Relation with other West Germanic languages In the early Middle Ages, a dialect continuum existed between Old Dutch and Old Saxon, a continuum which has since been interrupted by the simultaneous dissemination of standard languages within each nation and the dissolution of folk dialects. Although they share some features, a number of differences separate Old Saxon, Old English, and Old Dutch. One such difference is the Old Dutch utilization of -a as its plural a-stem noun ending, while Old Saxon and Old English employ -as or -os. However, it seems that Middle Dutch took the Old Saxon a-stem ending from some Middle Low German dialects, as modern Dutch includes the plural ending -s added to certain words. Another difference is the so-called "unified plural": Old Saxon, like Old Frisian and Old English, has one verb form for all three persons in the plural, whereas Old Dutch retained three distinct forms (reduced to two in Middle Dutch). Old Saxon (or Old Low German) probably evolved primarily from Ingvaeonic dialects in the West Germanic branch of Proto-Germanic in the 5th century. However, Old Saxon, even considered as an Ingvaeonic language, is not a pure Ingvaeonic dialect like Old Frisian and Old English, the latter two sharing some other Ingvaeonic characteristics, which Old Saxon lacked. Relation to Middle Low German Old Saxon naturally evolved into Middle Low German over the course of the 11th