hi there,
i was just doing some random googling on my family and came across these queries, i am not sure if this will help you in some way but my mother is a schuster she is the daughter of peter gordan schuster who has passed, my grandfather was the son of George Schuster and his mother was a Schwanke, i know my grandfather had only one sister and her name was Luisa, our family lives in sinamoga i believe my grandfathers brothers lived/live in alamagoto one i know of is uncle pagi and uncle sonny. i hope this little info can help there are others,my grandmother tells our generation stories of our grandfather which tends to lead to a whole lot of names whom she wants us to take note of so these were some i remember.