Urech von Brunegg AG

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I am trying to search for my wife's ancestors who came from Brunegg. Her father, Alfred Paul Urech, Jr. was born 30.8.1926 in New York. His father, Alfred Paul Urech, was born in Brunegg 11.8.1901 and worked as a steward on the "Rotterdam" which departed from Rotterdam on 14.10.1920 to New York. The older Alfred married Elfriede Hoffmann who was born 27.1.1895 in Zurich (mother's last name was Brubacher). Alfred's father was Jacob (or Jakob) Urech and his mother was Lina. Lina traveled to the U.S. twice - first, from Bremen, departing with immigration visa 460 issued in Zurich, on 12.6.1931 and arriving in New York 18.6.1931. On this trip she was 64 and listed as a widow; second, she traveled with her son and grandson aboard the "Konigstein" departing from Antwerp, Belgium to New York and arriving 23.10.1936. At that time, she was 66 years and 8 months (born ca. February, 1870). For both trips, Lina's birthplace was listed as Brunegg. During a trip from Cherbourg, France, 12.11.1929, Elfriede Urech's passport numbers are shown as 454424 and 455226. Any information on this Urech family (the older Alfred, Jacob and Lina) from Brunegg would be greatly appreciated. Thank you in advance.
I have a fairly good grasp of German if you need to send information in that language.