Moon_Light_Kiss_Pack:

 "Did the angels know who Whisper was?"

Saigge16:

 "No. Uriel kind of proved that when she had mistaken her as Luar. Luar and Death had kept their relationship a secret. When Luar had gotten pregnant with Whisper, she had completely cut off contact with the angels and ran away with Death to live out in Eden while the nephilim were living there before the battle. After about a year Death had dissapeared and had left Luar with Whisper, he was gone with the other horsemen to train for the battle of Eden under the charred council but Death hadn't told Luar. When Luar had dissapeared her apprentice Uriel had taken her place as champion of the hellguard to work under Abbadon. So yes the angels knew who Whisper was but they only knew Death was the father. Now the angels know Luar was her mother because in Darksiders Whisper Book 3 Humanities Test Whisper had admitted to Uriel that Luar was her mom."

 I'm not sure what you meant by "other angel kids" so if you elaborate more I'll add another page for explanation.