1. Cornelius Roosevelt was a member of the prominent Roosevelt family and the paternal grandfather of US President Theodore Roosevelt.

1. Cornelius Roosevelt was a member of the prominent Roosevelt family and the paternal grandfather of US President Theodore Roosevelt.
Cornelius Roosevelt was the last full-blooded Dutch Roosevelt of his line.
Cornelius Roosevelt's great-grandfather was Johannes Roosevelt, the founder of the Oyster Bay branch of the Roosevelt family.
Cornelius Roosevelt attended Columbia College but academic life did not suit him, and he did not graduate.
In 1818, after leaving college, Cornelius Roosevelt became his father's partner in importing hardware.
Cornelius Roosevelt continued to work in the business until his retirement in 1865.
Cornelius Roosevelt sold all remaining inventories from the chemical division as well as real estate holdings by 1851 and later became the present day Chase Bank.
On October 9,1821, Cornelius Roosevelt married Margaret Barnhill, a daughter of Robert Craig Barnhill and Elizabeth Potts.
Cornelius Roosevelt was a descendant of English and Irish Quakers and of Thomas Pott of Wales.
On July 17,1871, Cornelius Roosevelt died at his home in Oyster Bay, New York.
Cornelius Roosevelt's estate was valued at between $3 million and $7 million.