He's unconscious at 5, 0, -67 . You'll be jumped by some Bloodsabers as you approach him.
Find the Bloodsaber Poxreapers in Antonica (3) and Investigate the water supply (3). Both these updates are along the aquaduct on Antonica. You;ll be attacked by the Poxreavers, and click the colored green or white spot near the water spot to investigate the water.
-237, 7, -115 where the aquaduct leaves the ridge.
Go to Oakmyst Forest (via the Travel Within Qeynos Bell) and collect 8 Palemoon Lillies. They're a tuft of plant with a silvery effect. Reported locations include:
944, 3, -359
892, 2, -355
870, 1, -319
886, 2, -312
905, 2, -262
946, 2, -255
942, 5, -203
961, 2, -224
Return to Kelia
Give the Palemoon Cure to Sickened Citizens.
Seach for "a sickened citizen" near the water in elddar Grove. Reported locations include:
711, -20. -443
672, -22. -309
602, -22. -283
521, -17. -400
Return to Lachlyn (still in Elddar Grove)
Return to Queen Antonia
You should receive a letter from Lilly Ironforge for the next quest.