From www.usgenweb.org - NY - Chautaugua County
More info at site

The Early History of Chautauqua County, NY: SHERMAN was formed from Mina, April 7, 1832. It comprises township 2, range 14. Sherman was settled with unusual rapidity, although later than most towns.
The first settler is believed to have been Dearing Dorman, who came from near Batavia, NY in 1823. The next year after his settlement he raised an acre of wheat (30 bushels)- the first crop raised in this town. The same year or the next, his son Archibald was born- the first birth in town.

PIONEERS OF CHAUTAUQUA COUNTY
COMPILED BY DONNA MILLS
DORMAN, Dearing/Deering Born: 20 Dec 1797 in New Haven, CT. Married: 1st Huldah PERKINS d 1866 md 2d Mary (HORTON) ELDERKIN, widow of Addison ELDERKIN. Chautauqua County: 1st to Batavia 1804 and then to CC in 1823 settled at Sher man. Other: 1st settler in Town of Sherman Children: 14 - 7 sons 5 daughters Amasa - md Mary Ann WOOD- removed to Union, PA Archibald - 1st child born in Sherman. md Jane STODDARD. photo Luzerne - md Mrs. Mary HUNTLEY Albert - md Susan HORTON Elvira - md Gabriel ODELL Walter - md Mary ANDERSON Eliza - Simeon BRUMAGHIM Emiline - md Calvin MESSENGER Betsy - md George MESSENGER Dearing - md & removed to PA Huldah - md Andrew PERKINS removed to Ohio Riley - md Hannah HASKINS- removed to Allegany Co., NY 2 children who died young.

I have some more info if interested.

Lydia Vierson
LVierson@aol.com