Lydia Madden belonged to the old Hollingsworth Quaker family who settled in Pennsylvania around the same time as William Penn.
Williamson's admission to the Indiana bar was objected to, but he was ultimately admitted after a positive report from the examining committee (whose members included, at that time, future Indiana Governor Joseph A. Wright and future Utah Territory Supreme Court justice Delana R.
Williamson spoke at a meeting outside the courthouse in Greencastle to encourage local residents to enlist in the Union Army.
[2][3] In 1864, Williamson secured the Republican nomination for Indiana Attorney General, defeating his associate Daniel D. Pratt.
Williamson served as Attorney General for exactly six years under Governors Oliver P. Morton and Conrad Baker.
[2][3][4] In 1872, Williamson traveled across Central and Southern Indiana to campaign for the re-election of former Governor Morton to the U.S. Senate.
In 1894, he was the Democratic nominee for a seat in the General Assembly to represent Putnam, Montgomery, and Clay counties, but he was defeated.
[3] In 1842, while living in Bowling Green, Williamson married Elizabeth Elliott, daughter of the county clerk he was working under at the time.