Question: Who is the paternal grandfather of Prince Joseph Wenzel Of Liechtenstein?

Knowledge 1: Prince Joseph Wenzel of Liechtenstein
Prince Joseph Wenzel of Liechtenstein, Count Rietberg (born 24 May 1995) is the eldest child of Prince Alois of Liechtenstein, the Regent and Hereditary Prince of Liechtenstein, and his wife Princess Sophie of Bavaria, Duchess in Bavaria, he is also the eldest grandchild of the current ruling prince of Liechtenstein.He is second in the line of succession to the Liechtensteiner throne through his father. [SEP] Knowledge 2: Alois, Hereditary Prince of Liechtenstein
Alois, Hereditary Prince of Liechtenstein, Count Rietberg (born 11 June 1968, full name:Alois Philipp Maria), is the eldest son of Hans-Adam II, Prince of Liechtenstein, and Countess Marie Aglaë Kinsky of Wchinitz and Tettau.Alois has been regent of Liechtenstein  since 15 August 2004.He is married to Duchess Sophie in Bavaria.
Knowledge 1: Prince Joseph Wenzel of Liechtenstein
Prince Joseph Wenzel of Liechtenstein, Count Rietberg (born 24 May 1995) is the eldest child of Prince Alois of Liechtenstein, the Regent and Hereditary Prince of Liechtenstein, and his wife Princess Sophie of Bavaria, Duchess in Bavaria, he is also the eldest grandchild of the current ruling prince of Liechtenstein.He is second in the line of succession to the Liechtensteiner throne through his father. [SEP] Knowledge 2: Joseph Wenzel I, Prince of Liechtenstein
Joseph Wenzel I( Josef Wenzel Lorenz; 9 August 1696 – 10 February 1772) was the Prince of Liechtenstein between 1712 and 1718, 1732 and 1745, and 1748 and 1772.Born at Prague, Joseph Wenzel was the eldest son of Prince Philip Erasmus of Liechtenstein( 11 September 1664 – 13 January 1704) and Countess Christina Theresa von Löwenstein- Wertheim- Rochefort( 12 October 1665 – 14 April 1730).He was a nephew of Anton Florian.Joseph was primarily a general and was a very successful campaigner.In 1745, he was made Generalissimo in Italy and was victorious the following year at the Battle of Piacenza.In 1753 he was made General Chief Commander in Hungary.In one of the greatest achievements of his career, he reorganised the Habsburg artillery, partially financed out of his own pocket.From 1735 to 1736, he was Imperial Envoy to Berlin and he was Ambassador to Paris between 1738 and 1741.In 1760, he escorted the future bride of Josef II to Vienna.Joseph managed to rule Liechtenstein three times.Firstly, in his own right, from 1712 – 1718.The second time, he ruled as the guardian of Josef Johann Adam between 1732 – 1745 and the third time as representative of the House of Liechtenstein from 1748 – 1772.He was the 698th Knight of the Order of the Golden Fleece in Austria.When he died in 1772 in Vienna, without surviving issue, Liechtenstein went to his nephew Franz Joseph I, Prince of Liechtenstein.
Knowledge 1: Alois, Hereditary Prince of Liechtenstein
Alois, Hereditary Prince of Liechtenstein, Count Rietberg (born 11 June 1968, full name:Alois Philipp Maria), is the eldest son of Hans-Adam II, Prince of Liechtenstein, and Countess Marie Aglaë Kinsky of Wchinitz and Tettau.Alois has been regent of Liechtenstein  since 15 August 2004.He is married to Duchess Sophie in Bavaria. [SEP] Knowledge 2: Joseph Wenzel I, Prince of Liechtenstein
Joseph Wenzel I( Josef Wenzel Lorenz; 9 August 1696 – 10 February 1772) was the Prince of Liechtenstein between 1712 and 1718, 1732 and 1745, and 1748 and 1772.Born at Prague, Joseph Wenzel was the eldest son of Prince Philip Erasmus of Liechtenstein( 11 September 1664 – 13 January 1704) and Countess Christina Theresa von Löwenstein- Wertheim- Rochefort( 12 October 1665 – 14 April 1730).He was a nephew of Anton Florian.Joseph was primarily a general and was a very successful campaigner.In 1745, he was made Generalissimo in Italy and was victorious the following year at the Battle of Piacenza.In 1753 he was made General Chief Commander in Hungary.In one of the greatest achievements of his career, he reorganised the Habsburg artillery, partially financed out of his own pocket.From 1735 to 1736, he was Imperial Envoy to Berlin and he was Ambassador to Paris between 1738 and 1741.In 1760, he escorted the future bride of Josef II to Vienna.Joseph managed to rule Liechtenstein three times.Firstly, in his own right, from 1712 – 1718.The second time, he ruled as the guardian of Josef Johann Adam between 1732 – 1745 and the third time as representative of the House of Liechtenstein from 1748 – 1772.He was the 698th Knight of the Order of the Golden Fleece in Austria.When he died in 1772 in Vienna, without surviving issue, Liechtenstein went to his nephew Franz Joseph I, Prince of Liechtenstein.

Answer: Hans-Adam II