I'm interested in finding out what port of departure my
great grandparents came from when they came to America in
March, 1888. They left Alsace Lorraine--Cologne, France
(at that time) and port of arrival was on March 17, 1888 in
AskOlive Answer: Sharon, if you have the passenger list for your ancestors, all you need to do is go to the first page of the list (manifest). That page shows details - Captain's name, date of departure, port of departure and so on. I use
Ancestry.com for their complete ships passenger lists but you may have access elsewhere.
Just as a little correction to your query - Castle Garden was not a "PORT". It was a processing station for immigrants used between 1855 and 1890 for ships sailing into the port of New York.