The following data is extracted from Sketches of Addison County, Vermont.
Hallock, Heman, Panton, Vergennes p. o., was born in Hinesburg, Vt. In 1826 he came to Bristol. He was a son of Anson and Polly (Sweet) Hallock. They had a family of eleven children born to them -- Isaac, Lucy, Anson, Ira, Chester, Heman, Sarah, Hyman, Ovett, Charles, and Stephen. Heman was married in 1851 to Mehitable Norton, who died in 1852, leaving one daughter, Hattie, who married William Siples. Heman then married Mrs. Emily Eastman Stewart in 1855. She had one daughter by a previous marriage -- Sylvia Stewart, who married Erwin Carpenter in 1877. Heman had a family of three children by his second wife --Adelia (married William Conant in 1879), Eugene, and Etta. Mr. Hallock removed to Panton, Vt., in 1873, where he now resides. One of his brothers, Stephen, enlisted in the Ninth Vermont in 1863, and died at the hospital in New Orleans, of fever, while in the United States service.
Source: Sketches of Addison County, Vermont