Henry IV, Duke of Carinthia
Henry was the eldest son of Count Engelbert I of Sponheim (died 1096) and his wife, Hedwig, probably a Friulian countess from Mossa. Engelbert had been a supporter of Pope Gregory VII in the fierce Investiture Controversy and therefore had been divested of his county in the Bavarian Puster Valley by Emperor Henry IV in 1091.
After the death of his godfather, Duke Henry III of Carinthia, the last ruler from the House of Eppenstein, he was enfeoffed with the Carinthian duchy and the Veronese march by Emperor Henry V. He did, however, not inherit Henry's allodial lands, which passed to the Margrave Leopold of Styria, a member of the Traungau dynasty (Otakars). This resulted in the so-called provincia Graslupp, that is, the estates of Neumarkt and Sankt Lambrecht as well as the Murau region, which had previously belonged to the Carinthian county of Friesach, passing to the March of Styria.
- Hausmann, Friedrich. "Die Grafen zu Ortenburg und ihre Vorfahren im Mannesstamm, die Spanheimer in Kärnten, Sachsen und Bayern, sowie deren Nebenlinien". Ostbairische Grenzmarken – Passauer Jahrbuch für Geschichte Kunst und Volkskunde 36 (1994): 9–62.
- Brunner, Walter. "Das Werden der Landesgrenze gegen Kärnten und Salzburg". Das Werden der Steiermark. Graz: Verlag Styria, 1980.
- Ortenburg-Tambach, Eberhard Graf zu. Geschichte des reichsständischen, herzoglichen und gräflichen Gesamthauses Ortenburg, vol. 1: Das herzogliche Haus in Kärnten. Vilshofen, 1931.
- Peter Štih, Vasko Simoniti, Peter Vodopivec, Slovenska zgodovina (Ljubljana, 2016), 109,131-32.
Henry IV, Duke of CarinthiaBorn: c. 1065/70 Died: 14 December 1123
| Duke of Carinthia
Margrave of Verona