Speculation:Grita

From the Lyorn Records of the Dragaeran Empire

It is strongly hinted in Five Hundred Years After that Grita's mother was Sennya (who was the Dzur Heir), and that Garland was using his knowledge of Grita's existence to manipulate Sennya into doing exactly what he wanted as part of his plot in that book. There are some additional hints about Grita being Sennya's bastard at various points in The Viscount of Adrilankha.

It should be noted that this would make her the half-sister of Ibronka.

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It may be that certain delicate hints about Grita attempting to gain access to Adron e'Kieron were meant to imply that she did so by becoming an army whore.