Isaac McGary, early settler and soldier, was born in 1800 in Butler County, Ohio, the son of John McGary. He moved to Texas with Stephen F. Austin and fought at the battle of San Jacinto, after which he helped guard Antonio López de Santa Anna. McGary received a donation land grant for his participation in the battle, and his name is on the San Jacinto monument. He also served as a private under Capt. James Gillaspie in the Mexican War. His name is on the Gillaspie Memorial Marker in Huntsville. McGary served as sheriff of Montgomery County in 1843. When Walker County was formed, he was elected the first county clerk. He served in this capacity from 1846 to 1852. In 1854 he was chief justice of Walker County. McGary was a Mason in Forest Lodge No. 19. In the 1850 census he is listed as fifty years old, married to Elizabeth (Visier), a French immigrant, age thirty-four. Three children are listed. Elizabeth died in 1853 and is buried in Oakwood Cemetery in Huntsville. While on a trip to the coast, McGary died in Galveston in 1866. He was buried in Soldier's Rest Cemetery, Galveston. Source
Note: Unmarked. Isaac McGary was buried in Soldiers Rest, a section of the Old Potters Field cemetery set aside specifically for veterans in 1864. His tombstone, as well as most of the grave markers in the cemetery, was washed away in the 1900 hurricane. During the reconstruction of the island, the ruined graveyard was renamed Oleander Cemetery, the ground level was raised several feet and the original section boundaries of Soldier's Rest, and all the graves therein, were lost.