there were two brothers Karl Broedner and Alfred Broedner.
Karl Broedner married Marina Cariola (had relatives in lloleo and San Antonio Chile. Her relatives owned a commercial fishing supply business which was liquidated in ~1954). Marina Cariola was the mother of Walter Broedner (Who had two children by his first marriage: Isabel and Walter (Walter designed the Apple 2E for apple computers)), Matti Broedner Cariola de Lacrampette, Hilda Broedner Cariola de Rakela ( Jorge Rakela, the son, is an MD in Arizona USA).
Karl Broedner died in Santiago Chile in the early 1950's