The Auctarium Vindobonense names "Liutpoldus filius eius [=Ernust] quintus marchio". His birth date range is estimated from the estimated birth dates of his mother and his son. Markgraf Leopold.
He succeeded his father in 1075 as LIUTPOLD II Markgraf of Austria. The Chronica Boemorum records that "dux Wratislaus et sui fratres Chounradus atque Otto" fought against "orientalem marchionem Lupoldum filium Lucz", the passage being undated with the date 1082 inserted in the margin of the edition. It is assumed that this refers to Markgraf Liutpold II, although the reference to "filium Lucz" is unexplained.
The Continuatio Claustroneoburgensis records the death in 1095 of "Liupoldus marchio". The Chronicon of Mariano Scotti records the death in 1095 of "Liupoldus marchio". The necrology of Melk records the death "IV Id Oct" of "Liupoldus marchio qui monachum vitam hic instituit". The necrology of Kloster Neuburg records the death "IV Id Oct" of "Liupoldus prior marchio". 1