George Washington Hubbert was born on October 14, 1844, in Cassville, Missouri, to William and Nancy Hubbert. His father was a farmer who owned $1,200 of real estate and $300 of personal property by 1860. He grew up and attended school in Cassville.
He sided with the Confederacy during the Civil War. He enlisted in the Confederate army in August 1862, and he mustered in as a sergeant in the 8th Missouri Infantry. According to his service records, he was 5 feet, 8 inches tall, with light hair and grey eyes. The regiment took part in the Battle of Prairie Grove and the Battle of Pleasant Hill, and it spent the last year of the war in Arkansas and Louisiana. He eventually received a promotion to 1st lieutenant. The regiment surrendered on June 2, 1865, and Hubbert received a parole five days later.
He returned to Cassville after the war, and he was admitted to the bar in 1868. By 1870, he was working as a lawyer, and he owned $2,000 of real estate and $500 of personal property. He married Mollie Fullbright on August 23, 1872, and they had at least four children: Guy, born around 1873; Clare, born around 1875; Fred, born around 1877; and Grace, born around 1879. They moved to Neosho, Missouri, in the 1870s.
He supported the Democratic Party. According to an early biographer, local Democrats “once endorsed [him] for a place on the [state] Supreme Court…but he preferred to remain in the practice of law.” He died in Neosho on August 1, 1926.