Jenkin Whiteside was born in Lancaster, Pennsylvania. His father, Thomas Whiteside (1742–1823), was born in County Tyrone in Ulster and settled in the Province of Pennsylvania.[1] Jenkin Whiteside studied the law in Pennsylvania and was admitted to the bar there. Moving to Knoxville, Tennessee, he commenced practice there, and in 1801 and 1802 served as a Knoxville commissioner.
^McKellar, Kenneth. "Jenkin Whiteside," in Tennessee Senators as seen by one of their Successors. Kingsport, Tenn.: Southern Publishers, Inc., 1942, 121-128.