1. Frisia - Noun
2. Frisia - Proper noun
an ancient region of northwestern Europe including the Frisian Islands
Source: WordNetArcheological evidence suggests dramatically different models for different regions, with demographic continuity for some parts of the country and depopulation and possible replacement in other parts, notably the coastal areas of Frisia and Holland. Source: Internet
Dike The modern word dike or dyke most likely derives from the Dutch word "dijk", with the construction of dikes in Frisia (now part of the Netherlands and Germany ) well attested as early as the 11th century. Source: Internet
If there had been any Frisii left in Frisia, they would have drowned. citation citation citation citation Third, after the collapse of the Roman Empire, there was a decline in population as Roman activity stopped and Roman institutions withdrew. Source: Internet
In 1807 Prussian East Frisia and Jever were added to the kingdom but in 1809, after a British invasion, Holland had to give over all territories south of the river Rhine to France. Source: Internet
Legacy Copies of a map he made of Frisia in 1589 are also still extant. Source: Internet
Note that East Frisia is not included in this (later) map. Source: Internet