O'Hearn was born in Shreveport to Ernest O'Hearn (1880-1972) and Mattie W. O'Hearn (1886-1982). Ernest O'Hearn, who was probably born in New Orleans, had been orphaned as a child when both of his parents died of yellow fever. Taylor O'Hearn was a self-employed CPA and attorney in Shreveport. He was a U.S. Navy veteran with service during World War II. He was a former commander of the American Legion Post 14 in Shreveport.
Like most Louisiana Republicans of his era, Taylor O'Hearn started political life as a Democrat. In 1959, he supported the segregationist gubernatorial candidate William M. Rainach of Claiborne Parish in the Democratic primary. Rainach finished a weak third, and the governorship went to Jimmie Davis, a former Shreveporter who had also served as governor from 1944-1948.
O'Hearn charged that Long was practicing "the same old pork barrel. He's promising everybody everything with their own money." O'Hearn further claimed that Long was attempting to take credit for all political progress in the state. Long replied that he was "not ashamed I've fought to get things for Louisiana. I'm not ashamed to go to the White House to talk to the president to get things done for my state and its people." Critical of the Kennedy Cuban policies, O'Hearn called the failed Bay of Pigs operation a "desertion of Cuban patriots." Long denied O'Hearn's contention that he was automatically in lockstep with Kennedy policies. Long voiced opposition for instance, to Kennedy's intervention in the desegregation of the University of Mississippi at Oxford that fall, which had led to a violent confrontation.
Long turned aside a challenge from the "right" in his own party in the summer of 1962. He then defeated O'Hearn, with 318,838 votes (75.6 percent) to 103,066 (24.4 percent). O'Hearn carried seven north Louisiana parishes, where conservatism was running strongly at the time. He fared best in his own Caddo Parish, where he polled 64.7 percent. He also received 58.7 percent in Madison Parish (Tallulah) in northeast Louisiana. O'Hearn carried Webster (Minden), Morehouse (Bastrop), Bossier (Bossier City and Benton), Claiborne (Homer), and La Salle (Jena) parishes. Madison and Claiborne parishes became staunchly Democratic after the implementation of the Voting Rights Act of 1965 added large numbers of blacks to their voter rolls. In ten other parishes, all in north Louisiana, O'Hearn drew more than 40 percent of the vote.
O'Hearn's priority as a legislator was to promote the construction of a north-south interstate highway link in Louisiana, later the popular I-49. Billy J. Guin of Shreveport, one of the Republican candidates who was defeated in Caddo Parish at the time that O'Hearn was elected to the legislature, recalled that it was O'Hearn who first proposed the highway. Later, state Senator Johnston carried forward with the idea, proposing, at first, tolls to move the project forward.
In 1966, O'Hearn lost an attempt to win a newly-created judgeship in Caddo Parish. He was defeated, 64-36 percent, in the general election by Democrat James A. "Dee" Alexander. After Republicans scored gains in Caddo Parish in 1964, the Democrats took successful steps to drive them from local office. The vehicle used was the Caddo Democratic Association, which supplied campaign funds for any local Democratic nominee facing GOP opposition in a general election. The association had total success in its mission for five years -- from 1966 until 1971. Woody Jenkins said that he remembers O'Hearn and Hudson as men of high principles and solid role models for future generations of conservative legislators.
O'Hearn charged that election laws had been violated at three black precincts in Shreveport -- that Democrats passed out campaign literature at the door of one polling place and were less than the required 200 feet minimum from the two other precincts. O'Hearn said that he contacted Caddo Parish Sheriff James M. Goslin, and the Shreveport public safety commissioner, George W. D'Artois, both Democrats. Each told him that the matter was out of his jurisdiction. O'Hearn never again sought public office.
O'Hearn was a member of the First Baptist Church of Shreveport. He was an avid fisherman, musician, and photographer.
O'Hearn died in Granbury, in Hood County, southwest of Fort Worth, Texas, in 1997 at the age of eighty-nine.
Survivors included his wife of fifty-two years, Gladys Bookout O'Hearn (June 20, 1910 — September 6, 2001); one son, Patrick T. O'Hearn (born 1930) of Palm Springs, California; one daughter, Jerry O'Hearn Meier and husband Kenneth Fredrick Meier (both born 1932) of Granbury; nine grandchildren, ten great-grandchildren, and one great-great-grandchild. Gladys O'Hearn, a Shreveport native and a graduate of Northwestern State University (then College) in Natchitoches, was the executive secretary for many years of the Arkansas-Louisiana Citgo Company. Mrs. O'Hearn was also preceded in death by Paul A. Kennon, her son from a previous marriage.
Taylor and Gladys O'Hearn are interred in Forest Park Cemetery on St. Vincent Avenue in Shreveport. O'Hearn's parents are also buried in Forest Park but not in the same section of the cemetery.


