1852 – Born at "Ursino" near Elizabeth, New Jersey on the 4th of December.
1875 – Graduated from the Columbia Law School, New York City.
1877 – Admitted to the New Jersey bar, but did not engage in extensive practice.
1884 – Kean played a key part in helping the town, at the time called Granville, to obtain its first post office. During that year, the name Keansburg was adopted.
1885 – He was elected as a Republican to the Forty-eighth United States Congress.
1887-1889 – He was elected to the Fiftieth United States Congress and again was an unsuccessful candidate for reelection.
1899 – He was elected to the United States Senate.
1914 – He died at "Ursino" and was interred in Evergreen Cemetery, in Hillside, New Jersey, on the 4th of November.