Colorado Rep. Jared Polis and his domestic partner, writer Marlon Reis, on Friday announced the birth of their son Caspian Julius, making Polis the first openly gay parent in Congress.

“Baby and parents are doing well, [and] baby has learned to cry already!” Polis and Reis said in an emailed birth announcement. “No gifts please, just nice thoughts for Caspian, humankind, the planet, and the universe!”

Caspian Julius weighed in at 8 pounds, 12 ounces.

Polis is one of four openly gay members of Congress. Also gay are Democratic Representatives Barney Frank of Massachusetts, Tammy Baldwin of Wisconsin and David Cicilline of Rhode Island.

(Related: Wisconsin Rep. Tammy Baldwin running for Senate seat. )

The 36-year-old Polis is serving his second term in office. Before politics, he became a millionaire pitching flowers and greeting cards on the Internet with his companies and, then turned his attention to liberal causes such as helping the homeless. He is considered one of the 10 wealthiest members of Congress, worth an estimated $65 million.