Biography

Joseph Shannon (Democratic-Republican20) Crawford, Erie, Mercer, Venango, Warren

Pennsylvania Politics:

Unsuccessful campaign, Commissioner, Mercer County, Pennsylvania 1808.

Unsuccessful campaign, Pennsylvania State Senate, 20th district, 1809. 

Elected, Commissioner, Mercer County Pennsylvania, 1810.

Elected, Democratic-Republican, Pennsylvania State Senate, 20th district, Crawford, Erie, Mercer, Venango, Warren Counties, 1813-1816.

Only known information.

Cited:

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

A New Nation Votes (tufts.edu) 

So far this is the only known accurate information.