Someone points out the similarities between Owen and Preston Vogel. When asked if they're related, Vogel denies it. The reason behind the similarity is explained in the next episode
Halcyon Reynard appears to have gotten weaker since last seen in the episode Golem
An Aide-De-Camp is a personal assistant or secretary to a person of high rank, usually a senior military, police or government officer, or to a member of a royal family or a head of state.
According to Greg Wiseman, this episode takes place in June. A full six months after Goliath, Bronx and Elisa originally went to Avalon on December 28.
In the episode Ill Met By Moonlight in gratitude for their mercy Oberon declared Goliath and his clan shall henceforth be immune to his magics. Goliath has long since considered Elisa a member of the clan and even sees her as his potential mate so she shouldn't have been effected by the sleep spell.