Gottlieb & Bertha Bey were my gggrandparents; due to the historic nature of the train wreck I have found quite a bit of information on it. However your mention of a cousin interests me because I believe I may have found Gottlieb in the Hamburg Passenger list, next to another Bey (looks like John?? in old german script).
I am very interested in trading photos if you have any (I have some of Bertha & Augusta who also survived the train wreck.)