The earliest ancestor of this Sigg family Petrus Sigg is first documentary mentioned at his marriage with Anna "Ummenhoferin" on January 1, 1663 in Neufra next Riedlingen/Danube, in Binzwangen the first time at the birth his son Joannes Baur. This baptism was documented on July 12, 1663 in the birth records of Binzwangen. A documentary of the birth or death of Petrus Sigg was not found either in Binzwangen nor in Neufra and Erisdorf, the next town to Neufra.

Over the period between 1663 and 1683 all of his 12 children were documented in the parish register of Binzwangen. During the following 200 years until the birth Kreszentia Sigg (Creszentia Sigg), born in 1882, all Sigg ancestors lived in Binzwangen. In between the family name Sigg was also written as Sick from the priests, as in those times names were written according to the hearing.

They married either into families, which were resident in Binzwangen all the time or their wifes came from the neighbor town Hundersingen/Danube or from towns situated in the direct neighbourhood of the "Bussen", a pilgrimage mountain next to Riedlingen/Danube. the parish register normally trace back until the end of the Thirty Years' War in 1648.

With this ampling branch of the Baur family following long-established families from Binzwangen/Danube and Hundersingen/Danube are connected through marriages: Specker (Spöcker), Emhard (Emhart), Butzengeiger, Dollenmayer, Reck (Regg), Sträßle, Scherer, Selg, Schwarz, Riem (Riehm), Hüller (Hiller), Schneider, Wolwender, Wahl, Rebholz und Spieß.