The Fundatio Monasterii Sancti Pauli in Carinthia names "comes Engelbertus ex patre Sigfrido Francorum civis, ex matre Rihkarda maiorum Karinthia primus", and in a later passage names "Sifridi natale solum Spanheimmense fuerat castrum, Richkart Laventinis oriunda" as parents of "Hartwic Magdeburgensis archiepiscopus".
He was appointed Markgraf der Ungarischen Mark in 1045 until before 1048. "Heinricus…rex" granted property "intra fluvios Phiscaha et Litaha et Maraha" to "Sigefrido marchioni" by charter dated 7 Mar 1045. "Heinricus…rex" granted property "inter flumina Litaha et Fiscaha…in comitatu Sigifridi marchionis" to "fideli nostro Reginoldo" by charter dated 3 Jun 1045. "Heinricus…rex" granted property "iuxta alveum fluminis Danubii…contra Ungaricam plateam…villa Stillefride…" on the petition of "…Heinrici ducis Sigefrido marchioni" by charter dated 15 Jul 1045.
Graf im Pustertal 1048, maybe he was granted this county on losing the Markgrafschaft. "Heinricus…Romanorum imperator augustus" granted property "in pago Bvsterissa in comitatu Sigefridi comitis…Swarzenbahc…Aurina…" to Poppo Bishop of Brixen by charter dated 25 Jan 1048.
He died while returning from pilgrimage to Jerusalem. The brothers Graf Engelbert and Hartwig Archbishop of Magdeburg transferred the remains of their mother Richgard from Spanheim to St Paul to be next to her husband Graf Siegfried, the document dated [1100] confirming that their father died while returning from pilgrimage to Jerusalem and was first buried in Bulgaria and that their mother died while on pilgrimage to Santiago de Compostela. 1
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