A Guardianship represent individuals appointed by the court to oversee the affairs of a minor. It can also be used to oversee a business or a person incapable of handling their own affairs.
Public record keeping was very unorganized in previous generations.
It's very important to check maps. Boundaries change over time. Be sure the area where you think your ancestors resided is actually the area where they were.
The 1890 U.S. Census records were destroyed by fire on January 10, 1921.
Major ports of entry were Baltimore, Boston, New York, Philadelphia and New Orleans. There were other ports that were not considered major ports.