probably https://www.chess.com/member/erik
The First Member

I'm wondering who was the first recurrent member?
I want to know the first recumbent member.

@Erik and @Jay joined May 7, 2007; @Piotr joined May 8, 2007. Those were the Big Three. @billwall joined sometime in May 2007, but since he closed his account the exact date isn't evident (I think it was the 24th though). @batgirl joined June 13, 2007. @Patzer24 joined June 26, 2007.
Most of the staff we know, e.g. @Kayt, @Brenda, @Jacyln, @Brotherjosh, @Alex, @sean, @jdcannon, @Amelia, joined much, much later- in the double-digits. Even @danielrensch, one of the oldest, didn't join until 12-20-2008.
I rarely run into someone who joined earlier than I, but they do exist. Most people move on. eventually.

In July 2005, Chess Mentor was gone and chess.com took its first steps on its long road to becoming a playing site.

My first member rules, but at age 64 he doesn't get out very much anymore. Winston Churchill had a great line about that "An old swallow seldom leaves its nest."

I joined in Sept 2007. That means I am one of oldest member still around other than staff and associates.

Here's another classic line from Winston: "Make mine a triple!"
Sir Winston has come over here in the early days of the war to solicit backup, support, materiel, etc. He's standing in a dinner line, where a young American woman is carving up chickens. She asked him "What part of the chicken would you like?" He goes "I'll have some of the breast."
She blushed, and told him "In this country, we call that the white meat."
About ten days later, she received a package in the mail from 10 Downing Street. "HERE IS A CORSAGE FOR YOU TO PIN TO YOUR WHITE MEAT!"
Who is the first member of chess.com not including @chesscom