Ridgefield Township was organized the first Monday in December 1815 and comprised the territory now included in the townships of Ridgefield, Sherman, Lyme and the south half of Oxford. On 4 March 1816, the second and third sections of Lyme were set off to Wheatland (Wheatsborough?). On 2 March 1818 Oxford was attached to Bloomingville. On 6 February 1820 a one-mile square on the southwest corner of Oxford was attached to Lyme, and the next square mile east was attached to Ridgefield. Lyme and Sherman were detached from Ridgefield in 1819.
| Seth Brown 1812. | Sanders Littlefield (ca) 1812. |
| Joseph F. Read 1814. | John Sowers 1815. |
| Daniel Page 1815. | Major David Underhill 1815. |
| Charles Hubbell 1817. | George H. Clock 1817. |
| Daniel Clary 1817. | James Breckenridge 1817. |
| Reuben Bloomer 1817. | William Brooks 1818. |
| Deodatus Hubbell 1818. | Hial Hunt 1818. |
| Perry Easton 1818. | Thomas Dickey 1819. |
| James Hamilton 1819. |
The first white child born in Ridgefield was a son to Seth and Sarah Brown, born 29 August 1815.
The first burial in Monroeville Cemetery was Preoxcintha, wife of Isaac Clary. She died 21 September 1818.
The first couple to be married was Thomas Dickey and Elizabeth Myers in April, 1819.
The first frame house in Monroeville was built by John Sowers about 1820.
The first brick building was built by George Hollister about 1830.
Schuyler Van Rensselaer was the first postmaster.
John Sowers is believed to have planted the first orchard in 1817.
The children who attended the first school house, in Monroeville (date unknown), were: John S. Davis; Augustus H. Hubbell; James Sowers; Benjamin, Isaac and Rachel Spicer; Nelson and Orrin Brown; William and Rachel Fletcher; Diantha and Minerva Littlefield; Cecelia Loisa Hubbell; and Hosey and Almon Hunt. The first teacher for this school was George Burt who was paid $10.00 a month.
1840 Census--1,599.
1880 Census--2,359.