Member Biography

Dennis Whelen 

Sessions Office Position District Party
1794-1795       2 Federalist
1795-1796       2 Federalist
1796-1797       2 Federalist
1797-1798       2 Federalist
1798-1799       2 Federalist
1799-1800       2 Federalist
1800-1801       2 Federalist


01/19/1761 - 1819

Dennis Whelen (Federalist2) Bucks, Chester, Montgomery Counties 1794-1801 (Federalist2) Chester County 1801-1802

Early Life:

Dennis Whelen born January 19, 1761, Uwchlan Township, Chester County, Province of Pennsylvania, British Colonial America; son of Dennis and Sarah Thompson Whelan; founder, Chester and Delaware Federalist, Village Record; elected, Federalist, Pennsylvania State House of Representatives, 1792-1794; elected, Federalist, Pennsylvania State Senate, 1794-1802; unsuccessful campaign, Auditor, Chester County, 1809; married, Mary Downing; died, 1819, Chester County, Pennsylvania. No burial information. 

Pennsylvania Politics:

Elected, Federalist, Pennsylvania State House of Representatives, Chester County, 1792-1794.

Elected, Federalist, Pennsylvania State Senate, 2nd district, Bucks, Chester, Montgomery Counties, 1794-1801; Federalist, Pennsylvania State Senate, 2nd district, Chester County, 1801-1802, unsuccessful reelection campaign, 1802. 

Unsuccessful campaign, Auditor, Chester County, Pennsylvania, 1809.

Pennsylvania State House of Representatives Biography:

Not currently available. 


Brother, Israel Whelen, Federalist, Pennsylvania State Senate, Delaware, Philadelphia City, Philadelphia Counties, 1795-1798.

Israel Whelen  - Pennsylvania Senate Library (


Cox, Harold. "Senate Members W"Wilkes University Election Statistics Project. Wilkes University.

A New Nation Votes (

To George Washington from the Grand Inquest of Chester County … (