His parentage is confirmed by Ekkehard who names "duo fratres Aerbo…et Boto paterno de sanguine Noricæ gentis…Hartwici palatini comitis filii" when recording the death of "Boto comes cognomento fortis Aerbonis…germanus".
Graf von Botenstein 1074. "Heinricus…tertius Romanorum imperator augustus" confirmed the donation of property "villa Rounueld…in pago Vueringeon in comitatu Vueringeri" by "Boto Noricus natione vivens Bauarica…coniugis sue Iudithæ" by charter dated 2 Sep 1094.
The necrology of Milstatt records the death "Kal Mar" of "Poto com et fundator huius ecclesie". 1
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