I have located more ancestral data on Johann Michael Stigler,b. 14 June 1814 in Mantlach, Oberpfalz, Bavaria; d. 11 April 1900 in New Berlin, Waukesha County, Wisconsin. He m. Maria Anna Ostermann, b. 28 Feb 1828 in Batzhausen, Oberpfalz, Bavaria, Germany. They had 7 children, all b. Wisconsin.
I have traced the Ostermann line back 3 more generations, to 1650.
Johann Michael's parents are; Johann Michael Stigler, b. 29 May 1779 in Mantlach, Oberpfalz, Bavaria, AND Katharina Edenharter, b. 27 Jan 1780 in Oberpfalz, Bavaria. They had 3 children that I know of.
I have this Stigler line back 3 more generations to ca 1645, all documented.