I am researching the Weetenkamp family of Maryland. John H. Weetenkamp arrived in 1886. I have photos of his sisters (Bertha and Johanna) taken by a photographer in Bremerhaven Germany. It is possible the family came from Oldenburg.
His sister Johanna's married name was Kaiser and she lived in Berlin during 1921.
The family was Catholic, Jesuit educated. It is believed his brother or other relative visited Baltimore on the uBoot Deutchland in 1916. Unfortunately, the crew manifest is unavailable. I also know he traveled back and forth to Germany in the late 1890's and early 1900's. His first wife was Frances Duerbeck died in child birth (Married and died in 1893)and second wife was Adelle Hatfield (Married 1895) of Maryland. Any help or thoughts would be appreciated.