The following information can be gained with a Streetwise check:
DC 15: Ellarian Dawnhorn is the constable of New Velar. She is a gold elf (a type of eladrin).
DC 18: Ellarian is keen both in magic and with the sword.
DC 20: Ellarian has been the constable in the last fifteen years. She used to be the constable when she was a much younger elf, but in the Year of the Elfqueen's Joy (1428 DR) resigned to become a Burgher and aid in forging the alliance with Myth Drannor. In the Year of the Elven Swords Returned (1465 DR), she took up the constableship again, and passed her seat to Kira Nenthyn of the Fall of Stars.