Ezra Frank Kysor (1835–1907) was an American architect from Los Angeles, California.
He is believed to be the first professional architect to practice in Southern California.
[1] Around the age of thirty, he traveled west to Virginia City, Nevada.
[5] Hennessy, who was born in Ireland and came to the United States in 1875 or 1876, left Los Angeles for Australia in late 1880.
[7] It was around this time the Kysor began to withdraw from practice, to focus on real estate speculation.