EJ107 wrote...
But Hawke's father was an apostate, so how would they know that one of Hawke's parents was a mage?
He was captured by Templars for a time, eloped with one of the scions of the greatest families of Kirkwall, worked for a mercenary company, and made friends in the Circle of Kirkwall (Mage and Templar alike).
Additionally, he was pursued by the Templars after he eloped with Leandra.
That's only part of his history.
It makes sense for it to be ignored in the narrative. Not to mention even if the chantry did know about them it would have been assumed that they died when the blight hit Lothering.
He has the same last name of the Mage that was captured long ago and his family claim to be related to the Amells -- Gamlen Amell proves Leandra's claims by helping them get into Kirkwall, acknowledging her as who she is.
Remember, Leandra Amell eloped with an apostate. If Leandra Amell returns to Kirkwall, is acknowledged by her brother to be who she is, and has children that bear the last name of their apostate father, then there's a lot of groundwork for suspicions to be had.
Also, they're related to the Amells of the Ferelden Circle Tower.