e conflict would be besieged and destroyed by members of the other party, in gruesome battle after gruesome battle, but by the end of the 11th century, and the first half of the 12th, the Hohenstaufen emperors stabilized the Holy Roman Empire. The family came from the region and Swabia, the Linzgau, and the Bodensee region became the middle point of the Empire.
This is also the beginning of �berlingen's period of blossoming. Many of the documents from the period have been lost, possibly in the city fire in 1279, but a great deal can be extrapolated. Hand in hand with the expansion of the Holy Roman Empire, localities throughout the empire experienced infrastructure improvements: improved roads and exchange regulations encouraged trade, particularly in the all important centrally located Swabia. The exact date in which the city received its market rights is ambiguous, but it was probably between 1180 and 1191; maps showing the trading road from Stockach to Buchhorn show the city of �berlingen in comparable size and type; by 1226 �berlingen had a Jewish cemetery, and these clues lead to the conclusion that the city had a market for a much longer period than this, thus the supposition that the Emperor Barbarossa had established the market at the end of his own regime. He had been in the region several times: 1153, 1155, 1162, 1181, 1183, to hold court sessions, and in 1187 he stayed in Wallhausen, across the lake to sign the documents establishing the Cloister of Salem.
At the end of the 14th century the city was granted status as a free imperial city. In 1547, the Holy Roman Emperor, Charles V, broadened the city's market rights to prohibit any trade in grain or salt within two German miles (approximately 10 English miles) of the city
The city flourished in the 13th to 16th centuries mainly due to widespread grapevine cultivation on the south-facing slopes of the Lake Constance and its salubrious
