No. You’re thinking of Ira Einhorn, who claimed to have been involved in the founding, but it wasn’t true.
Yes, it is true.
Ira Einhorn’s early involvement in Earth Day has been memory-holed and plastered over with denials.
Kicking myself for not saving articles from Philly newspapers articles at the time touting Ira Einhorn as main organizer and speaker at early Earth Day rallies.
We’re expected to believe Senator Nelson came up with the idea all by himself out of nowhere.