Analysis of information sources in references of the Wikipedia article "Sigebert IV" in English language version.
We would like to repeat that in no case have we found any trace of the son of Dagobert II in the list of the Visigothic Razes. This Sigibert IV found refuge with his abbess sister at Oeren and was the cousin of Sigebert de Rhedae, who was alive more or less around the same time. Historians conflate these two Sigiberts into one person. When did Sigebert IV die? We don't know. Some think that he was the founder of the Habsburg family. [...] If anyone can claim to be a descendant of Sigisbert IV in the direct line it can only be Otto von Habsburg, and he alone. To all those people who write to me I have given this same reply.
We would like to repeat that in no case have we found any trace of the son of Dagobert II in the list of the Visigothic Razes. This Sigibert IV found refuge with his abbess sister at Oeren and was the cousin of Sigebert de Rhedae, who was alive more or less around the same time. Historians conflate these two Sigiberts into one person. When did Sigebert IV die? We don't know. Some think that he was the founder of the Habsburg family. [...] If anyone can claim to be a descendant of Sigisbert IV in the direct line it can only be Otto von Habsburg, and he alone. To all those people who write to me I have given this same reply.
