Levi Sage Deming (October 23, 1817 - May 25, 1904) was a Newington, Connecticut farmer and a member of the Connecticut State Legislature in 1863. He was born on October 23, 1817 in Newington, Connecticut, the son of Levi Deming and Sarah Sage, the daughter of William Sage and Anna Hollister. When Levi was nine years old, his mother died; the following year, in 1828, his father married Sarah Faxon, the daughter of Captain Ebenezer Faxon and Eleanor Whitman. He received his primary education in the area and became occupied with farming in Newington, which he continued for 51 years.
On September 21, 1842, Levi Sage Deming married Caroline Scranton, the daughter of Thomas and Betsey Parmalee, born July 6, 1822 in Guilford, Connecticut. In 1863, he was a member of the Connecticut State Legislature. After making his living as a farmer, Deming and his family moved to Guilford, Connecticut, in 1868. For two years, he was a merchant, until in 1870 he changed his residence to Middletown, Connecticut, where for a number of years he was engaged in the coal and cement business. On February 4, 1884, his wife, Caroline Scranton, died in Middletown, Connecticut.
Deming spent the remainder of his life in Winter Park, Florida. He spent his leisure hours in designing cards and decorative tablets, and wrote in his spare time. He also took interest in compiling a genealogy of the descendants of John Deming, an early Puritan settler of Connecticut and one of the founders of Wethersfield. On May 25, 1904, he died there in Winter Park, Florida.
- George Scranton Deming (b. Aug. 3, 1843)
- Edward Levi Deming (b. May 1, 1846)
- Caroline Elizabeth Deming (May 2, 1852 - March 5, 1862)
- Catharine Maria Deming (Nov. 4, 1856 - Jan. 22, 1881) - m. Melville Alvord Stone