Well, in Cormyr there was The Goblin Wars period and game takes place in 1373 (entire spellplaque, merging dimensions and invasion of shades etc were merely nightmares seen by globally). So it's 2-3 years ago. In The Goblin Wars (despite the name) main foes were orcs and were led by elf dragon (I guess half-dragon elf). Considering Myranda does not like orcs so she could had joined as mercenary and Baramos joined in as well as mercenary.