National Era was just the latest name for an abolitionist newspaper.
The first was called the Philanthropist. James Birney began publishing The Philanthropist on Friday, January 1, 1836. It was an abolition newspaper that was named for an earlier abolition newspaper for which Birney had written. The paper was published in Cincinnati, across the Ohio River from Kentucky, then a slave state.
James Birney let The Philanthropist move to Washington D.C., where it was renamed the National Era.