Shonda, according to Banta (1901), Thomas' son Daniel had a son named Nathan, and he had a son also named Nathan who married Deborah Prout. Nathan and Deborah had six sons, the oldest named Nathan. Banta (1901) indicates that this Nathan changed his name to SEARS, but his brothers remained SAYRE.
Nathan SEARS married three times and all of his children recorded in Banta (1901) retained the surname SEARS. The SAYRE/SEARS families moved from Southampton, Long Island, NY to Middlesex and Middletown, CT circa 1700.
Moreover, Banta (1901) does not indicate any Hiram SEARS. However, Ralph Sayre in his research published in 2003 does include Hiram SEARS data. He suggests that Hiram is from the branch of John SAYRE of Baltimore, MD. In 1800 he is enumerated in Frederick County, MD, an estimated birth year of 1770 and born in Maryland. In census years 1810, 1820, and 1830 Hiram in enumerated in Prince William County, Virginia, again according to Ralph Sayre (2003). He further suggests Hiram's wife was Nancy Elizabeth SEARS but includes third party information about another wife named Nancy CAMPBELL. In this context Hiram's last name is SAYRES, and one of his grandsons, Newton SAYRES, is recorded as having married in Wetzel County, West Virginia. In my opinion, these two Hirma's are not likely the same but I'm not the expert on the data or the source of the data.