1701 the Jauchs became burghers of Lüneburg. At Lüneburg Johann Christopher Jauch (1669–1725) was Royal British and Electoral Brunswick-Lüneburg Dean of the Lutheran churches () at St. John's Church, Lüneburg, while Johann Christian Jauch (1702–1778) became canon, 1754 subsenior collegii canonici, 1760 The Very Reverend () and vice-dean () with the function of a provost of the Lutheran cathedral of Bardowick. He married Clara Maria Rhüden (1710–1775), who was a great-great-grandchild of the Lutheran theologian of the Protestant Reformation (1559–1605), thereby ancestor of all later Jauchs, son of deacon Paul Gesner, who was taught by Martin Luther and consecrated by Johannes Bugenhagen. Her great-great-grandfather, the professor of philosophy at Hamburg, Bernhard Werenberg (1577–1643), has been an opponent to the noted scientist Joachim Jungius at the same place. Her uncle was the predecessor of Johann Christopher Jauch and great-grandson of Philipp Melanchthon Heinrich Jonathan Werenberg (1651–1713). Ludolph Friedrich Jauch (1698–1764), son of the dean Johann Christopher Jauch, was Senior Pastor of Lüneburg's St. Michael's Church (), his brother Tobias Christoph Jauch (1703–1776), was a legal practitioner and deputy (), member of the municipal council () of Lüneburg. Carl Jauch (1735–1818) was Royal British and Electoral Brunswick-Lüneburg judge of the castle court of justice () in Horneburg and canon of the Cathedral of Bardowick, Friedrich August Jauch (1741–1796), son of the imperial civil law notary Adolph Jauch (1705–1758), was senator and police governor of the city of Hannover.