Did my second great grandfather, Samuel Newmark, make up a cousin while crossing a border?

When my great grandfather, Barney, in July of 1907 crossed the Canadian border into the US, the Border Crossings document indicates the following:

Barney Newmark, age 22, Tailor, Citizen of Canada, Hebrew, Last Resided in Winnipeg, Nearest Relative Mother Rosa Newmark in London, Final Destination St. Paul Minnesota, Joining a cousin, Joseph Newmark, on 344 Eagle Land Street, place of birth London England.

Barney's father, Samuel, indicated at the same border crossing that he was:

45, a tailor, citizen of Canada, Hebrew, Last resided in Winnipeg, Nearest relative wife, Rosa in London, visiting the same cousin, Joseph in St. Paul, and place of birth Warsaw, Poland. 

Barney was not born in London. Later, for a local Who's Who of businessmen, he would claim he was born in Dublin, Ireland. It is almost certain he was born in either Warka or Warsaw, Poland, like his father. They were also not citizens of Canada. They had only spent three months in Canada, and I don't believe anyone in the family obtained citizenship in London even though they were there for 15 years. 

Who is the cousin, Joseph, in St. Paul Minnesota? Is he another figment of  imagination? Eagleland is a very curious name for a street since America has an eagle for a symbol, and I am unable to find such a street in St. Paul or its vicinity The only Eagleland Street I can find is in Texas. Samuel's middle name was Joseph.

However - nearby in Minneapolis, in 1907, there were families with the surname: Newmark, Neimark and Naymark. None that I can find with the given name Joseph. I suspect this cousin was an invention. But there remains a possibility that they existed.