Roger Orvis (1745-1829) was placed on the New York pension roll, 1818, for service as private in the 9th company, Colonel Hinman's Connecticut regiment, 1775. He was born in Farmington, Conn.; died in Western, N. Y.

You are in luck. Isaac Brown Orvis is in the book, "The Orvis Family in America" on page 104. His lineage is:

George(0) - Roger(1) - David(2) - Eleazer(3) - Roger(4) - Lorenzo(5) - Silas(6) - Isaac (7)

He was the 11 th child of Silas Orvis and Sarah Gregory (they had 17 children).
Born on March 29, 1834 at Pickering, Ontario.
He married Margaret Richie.
He was killed by lightning.
He and Margaret are listed as having 12 children.
Arminthia 1/24/1857
Emma 8/10/1858
William Isaac 12/15/1860
Lydia 6/5/1865
Isaac Gregory 10/7/1866
Silas Ebenezer 1/27/1870
Robert 12/4/1871
George Albert 10/22/1873
Charlotte M. 11/25/1875
Mary
Margaret Ellen 2/5/1879
Ira 9/2/1881