Ike was the first of three children born to Peggy and Langston Sinclair, Sr. He was a noble and gifted child of God who served his country, faithfully enlisting in the Army, Marines and the Army National Guard. He was devoted to the military life. He was multi-talented and in his younger years, he was athletic. He played baseball, soccer and was an avid swimmer. He was well known for his dancing performances at Crowley High School's football games. Ike would always grasp the attention of others with his engaging conversation. Not only did he collect super hero figures, but also he was a true hero for the United States of America. He was so courageous that he volunteered for many military job duties. He wanted to assume his father's role by being an outstanding soldier. He was a member of St. Theresa Catholic Church of Crowley and attended My Father's House Family Worship Center in Natchitoches. He praised and worshiped Jesus Christ as his personal Savior. Being the living Christian man that he was, Isaiah surrounded himself with his family and friends. He aided them both spiritually and morally. He was a true giver. Besides serving his country, he was a faithful employee of Wal-Mart in Natchitoches while attending Northwestern State University.
Isaiah leaves his mother, Peggy Ann Sinclair; his brother, Langston A. Sinclair, Jr.; his sister, Tricia Sinclair; his nephew, Kenneth Hoover; his nieces, Keirra Hoover and Autumn Sinclair; his loving paternal grandmother, Alma Sinclair; all of Crowley. He was preceded in death by his father, Langston A. Sinclair, Sr.; his grandfathers, Joseph Sinclair, Sr. and Ernest Bargeman; his maternal grandmother, Ora Lee Anderson; and one of his favorite cousins, David Bernard, Jr.