Question: Who is Mieszko Mieszkowic's paternal grandfather?

Context paragraphs:
title: Kaya Alp
paragraph_text: Kaya Alp was, according to Ottoman tradition, the son of Kızıl Buğa and the father of Suleyman Shah, who was, in turn, the grandfather of Ertuğrul, and the great grandfather of the Ottoman Empire founder, Osman I.
title: Zhao Shoushan
paragraph_text: Zhao Shoushan( 12 November 1894 – 20 June 1965) was a KMT general and later Chinese Communist Party politician. He is the grandfather of Zhao Leji.
title: John Mackay (poet)
paragraph_text: John Mackay( 1656–1754), known as( The Blind Piper), was a Scottish Gaelic poet and composer, and the grandfather of William Ross.
title: Fred Le Deux
paragraph_text: Frederick" Fred" Le Deux( born 4 December 1934) was an Australian rules footballer who played with Geelong in the Victorian Football League( VFL). He is the grandfather of Tom Hawkins.
title: Lyon Cohen
paragraph_text: Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist. He was the grandfather of singer/ poet Leonard Cohen.
title: Abd al-Muttalib
paragraph_text: Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
title: John Westley
paragraph_text: Rev. John Westley( 1636 – 78) was an English nonconformist minister. He was the grandfather of John Wesley( founder of Methodism).
title: Mieszko Mieszkowic
paragraph_text: Mieszko Mieszkowic (979/984 – aft. 992/95), was a Polish prince, and a member of the House of Piast. He was the second son of Mieszko I of Poland, but eldest born from Mieszko's second marriage to Oda, daughter of Dietrich of Haldensleben, Margrave of the North March.
title: Henry Krause
paragraph_text: Henry J." Red" Krause, Jr.( August 28, 1913 – February 20, 1987) was an American football offensive lineman in the National Football League for the Brooklyn Dodgers and the Washington Redskins. He played college football at St. Louis University. He is the grandfather of Jennifer Krause He is the great grandfather of Payton Hoeing
title: Mieszko I of Poland
paragraph_text: Mieszko I (– 25 May 992) was the ruler of Poland from about 960 until his death. A member of the Piast dynasty, he was a son of Siemomysł, and a grandson of Lestek. He was the father of Bolesław I the Brave (the first crowned king of Poland) and of Gunhild of Wenden. Most sources make Mieszko I the father of Sigrid the Haughty, a Scandinavian queen, though one source identifies her father as Skoglar Toste, and the grandfather of Canute the Great (Gundhild's son), and the great-grandfather of Gunhilda of Denmark, Canute the Great's daughter and wife of Henry III, Holy Roman Emperor. While he was the first Christian ruler of Poland, he continued the policies of both his father and grandfather, who initiated the process of creation of the Polish state. Through both alliances and the use of military force, Mieszko extended ongoing Polish conquests and early in his reign subjugated Kuyavia and probably Gdańsk Pomerania and Masovia. For most of his reign, Mieszko I was involved in warfare for the control of Western Pomerania, eventually conquering it up to the vicinity of the lower Oder river. During the last years of his life, he fought the Bohemian state, winning Silesia and probably Lesser Poland. Mieszko I's alliance with the Czech prince, Boleslaus I the Cruel, strengthened by his marriage in 965 to the Czech Přemyslid princess Dobrawa, and his baptism in 966 put him and his country in the cultural sphere of Western Christianity. Apart from the great conquests accomplished during his reign (which proved to be fundamental for the future of Poland) Mieszko I was renowned for his internal reforms, aimed at expanding and improving the so-called war monarchy system. According to existing sources, Mieszko I was a wise politician, a talented military leader, and a charismatic ruler. He successfully used diplomacy, concluding alliances, first with Bohemia, then Sweden, and the Holy Roman Empire. In foreign policy, he placed the interests of his country foremost, even entering into agreements with his former enemies. On his death, he left to his sons a country with greatly expanded territories, and a well-established position in Europe. Mieszko I also enigmatically appeared as "Dagome" in a papal document dating to about 1085, called "Dagome iudex", which mentions a gift or dedication of Mieszko's land to the Pope (the act took place almost a hundred years earlier). It is roughly his borders that Poland was returned to in 1945.

Reasoning steps:
Mieszko Mieszkowic father Mieszko I
Mieszko I father Siemomysł

Answer: spans: Siemomysł