Liberal Democrat deputy leader Simon Hughes, who was the party's president until the end of 2008, denied that he ever knew about the allegations against Lord Rennard.
Mr Hughes told ITV News: "I can be categoric, I knew nothing of any allegation made to me over the four years when Lord Rennard was the chief executive. Nothing came to me formally, nothing came to me informally.
"I didn't see inappropriate behaviour and I was not aware of any complaints floating around and I think if they had been made in any specific way, they would have come my way."
Mr Hughes added it was "clear at the time" that Lord Rennard's 2009 resignation from his post as chief executive was down to health reasons.
Nobody thinks Nick is the kind of guy who would defend a 'boy's club', but that does not necessarily mean he has handled the issue well.
One of the women who made allegations against Lord Rennard told ITV News that Lib Dem leader Nick Clegg shifted his position on the matter.
Questions for the Lib Dems mount, centred on what senior members knew about allegations surrounding former chief exec Lord Rennard and when.