Knoll was diagnosed in July with neuroendocrine cancer and died Nov. 12. She was 78.
At a memorial service in the state Capitol Rotunda on Friday, New York Sen. Hillary Clinton said Knoll was known as a tough-as-steel woman who broke barriers and defied odds, and encouraged others to do the same.
Clinton recalled that Knoll had joined her at Pittsburgh's St. Patrick's Day parade during Clinton's campaign for the Democratic presidential nomination.