Question: Who was the succesor of Emperor Sigismund?
About the article "Austria", section "Middle Ages".

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In 535, Sigismund's remains were recovered from the well at Coulmiers and buried in the monastery at Agaune.
Eventually Sigismund was canonized.
Correspondence has survived between Sigismund and Avitus, who was a poet and one of the last masters of the classical arts.
In 1366, Charles IV, Holy Roman Emperor, transferred Sigismund's relics to Prague, hence he has become a patron saint of the Czech Republic.
The emperor gave the saint's name to one of his son, the later King Sigismund of Hungary (who also became decades later King of Bohemia and Holy Roman Emperor).
In 1424, Sigismund of Hungary constructed a church in the honor of Saint Sigismund in the City of Buda.
In 1424 King Sigismund took the reliques of Saint Sigismund from Prague and sent them to the Hungarian city of Varad, so they could be protected from the Hussites. 
Sigismund of Lithuania may refer to:  Sigismund Kęstutaitis (ca.
1365 - 1440), Grand Duke Sigismund I of Lithuania  Sigismund I the Old of Poland (1467 – 1548), who was also Grand Duke Sigismund II of Lithuania  Sigismund II Augustus (1520 – 1572), King of Poland and Grand Duke Sigismund III of Lithuania  Sigismund III Vasa (1566 – 1632 N.S.
), head of the Polish-Lithuanian Commonwealth  
Sigismund (variants: Sigmund, Siegmund) is a German proper name, meaning "protection through victory", from Old High German "sigu" "victory" + "munt" "hand, protection".
Tacitus Latinises it "Segimundus".
There appears to be an older form of the High German word "Sieg" (victory): "sigis", obviously Gothic and an inferred Germanic form, and there is a younger form: "sigi", which is Old Saxon or Old High German "sigu" (both from about 9th century).
A 5th century Prince of Burgundy was known both as "Sigismund" and "Sigimund" (see Ernst Förstemann, "Altdeutsche Personennamen", 1906; Henning Kaufmann, "Altdeutsche Personennamen", Ergänzungsband,1968).
A Lithuanian name Žygimantas, meaning "wealth of (military) campaign", from Lithuanian "žygis" "campaign, march" + "manta" "goods, wealth" has been a substitution of the name "Sigismund" in the Lithuanian language, from which it was adopted by the Ruthenian language as Жыгімонт (such are the cases of Sigismund Kestutaitis, Sigismund Korybut, Sigismund I the Old, Sigismund II Augustus).
The Polish spelling is Zygmunt.
Segismundo, 21st century hero of the dramatic novel "United States of Banana" by Giannina Braschi, based on Calderón de la Barca's Life is a Dream.
Sigismund, a character from the Warhammer 40,000 game series, First Captain of the Imperial Fists Legion and later founder and first High Marshall of the Black Templars Chapter  Sigismund (bell), a famous bell in the Wawel Cathedral in Kraków, cast in 1520  Siegmund, a focal character in Richard Wagner's "Die Walküre"  "Wilhelm Gottsreich Sigismond von Ormstein, Grand Duke of Cassel-Felstein", fictional King of Bohemia in "A Scandal in Bohemia" (Sherlock Holmes adventure)  Sigismund the mad maths teacher, a character in the Nigel Molesworth school stories  
The son of King Casimir IV Jagiellon and Elisabeth of Austria, Sigismund followed his brothers John I of Poland and Alexander I of Poland to the Polish throne.
Their elder brother Vladislaus II of Bohemia and Hungary became king of Hungary and Bohemia.
Sigismund was christened as the namesake of his mother's maternal grandfather, Holy Roman Emperor Sigismund, who had died in 1437. 
Sigismund I may refer to: Sigismund of Burgundy (died 524), King of the Burgundians Sigismund I, Prince of Anhalt-Dessau (died 1405) Sigismund, Holy Roman Emperor (1368–1437) Sigismund I of Lithuania (c. 1365 – 1440) Sigismund, Archduke of Austria (1427–1496) Sigismund of Bavaria (1439–1501), Duke of Bavaria Sigismund I the Old (1467–1548), King of Poland and Grand Duke of Lithuania