I believe your age decides a lot as to where you came in.
For me, like Greg, it was first, Lonnie Donegan.
Then much, much later, listening to Jim Lloyd, on "Folk on Two" on the BBC Radio, long wave. I'd moved to Norway by '68 so had left the floor singing behind me.
Tim Hart & Maddy Prior and then Steeleye Span. etc., etc.
Chas