Hodgins and the audience find out Angela Montenegro's first name in Season 10, Episode 21 ("The Life in the Light"). The forensic entomologist visits his wife's office to show her evidence from their latest murder investigation. He realizes a passport is on her desk and opens it, revealing that her father bestowed her the name Pookie Noodlin Pearly-Gates Gibbons. Although it's not 100% clear where Pookie Noodlin comes from, Pearly-Gates is a reference to the name the real-life Billy Gibbons gave to his 1959 Gibson Les Paul guitar.
While Hodgins is ecstatic with his discovery, Angela is mortified. "It's like something you name a pet that you hate," asserts the mother of one. Angela then reveals that she chose not to file for a legal name change to appease her father. "It just meant something important to him and he begged me to leave it," explains the forensic artist.
During a June 2015 interview with TVLine, the show's executive producer Stephen Nathan shared that he partnered with Hart Hanson to come up with Angela's unique name. "[Hart] had a name in the file that he had thought of. We just put them together. We've been making names for years ... At a certain point, you just have to jump in the pool," shared the executive producer.