Steamport was a town on the Green River incorporated in 1837 in then Henderson County. In 1860, this section of Henderson county became part of Webster County, which was created from Henderson, Hopkins, and Union counties.

1837 CHAP. 421, AN ACT to establish the town of Steam Port in the county of Henderson, and for other purposes.
Sec. 1. Be it enacted by the General Assembly of the Commonwealth of Kentucky, That the town of Steam Port, upon the bank of Green river, in the county of Henderson, shall be, and the same is hereby established upon the plan formed and laid down by John Harmon, proprietor thereot, and the said plan is hereby ratified and confirmed, and that the said town shall hereafter be known and called Steam Port.
Sec. 2. Be it further enacted, That John Harmon, Owen Thomas, John M’Elroy, James Thomas and — Edwards,
are hereby constituted and appointed Trustees for said lown, who shall continue in office, from and after the passage of this act, until the first Monday in September next; and it shall be the duty of the Trustees aforesaid to have the plan of said town recorded in the Clerk’s office of the county court of Henderson, as soon as practicable.

References:

Book I, page 392

Acts Passed at the Session of the General Assembly for the Commonwealth of Kentucky • 1837

The Democratic Banner • Thu, Aug 12, 1852

The Democratic Banner • Thu, Mar 10, 1853