Ammaratha Cyndusk

Lady Joysil Ambruar, true identity is the song dragon Ammaratha Cyndusk, was once also the sorceress and jeweler Maerjanthra Shalace of Waterdeep, lover to Elminster and daughter to Narnra Shalace.

Known to be a wealthy Sembian merchant noble (perhaps this doesn't count as Cormyrean nobility, despite the fact she lives here).