High Quality Content by WIKIPEDIA articles! Johann I Joseph, Prince of Liechtenstein, born Johann Baptist Joseph Adam Johann Nepomuk Aloys Franz de Paula (Vienna, 26 June 1760 – Vienna, 20 April 1836) was the Prince of Liechtenstein between 1805 and 1806 and again from 1814 until 1836. He was the last Liechtenstein prince to rule under the Holy Roman Empire between 1805 and 1806 and as regent of Liechtenstein from 1806 until 1814. He was the fourth son of Franz Joseph I, Prince of Liechtenstein.