You have been charged by Elrond of Rivendell with gathering Aragorn's Dúnadan kin throughout Eriador.
'The sons of Elrond have already left for Thorenhad to prepare for the coming journey. Elrohir did say that one of the Dúnedain, a Ranger named Radanir, was staying for a few days at their camp. As Thorenhad is nearest to Rivendell, you should travel there first to speak to Radanir before seeking the others.
'I have met few of Aragorn's kin, but Radanir is known to me, for he journeys oft into the trackless Ettenmoors and often stays here in Rivendell. For a time, my brethren sought to convince him to join the company in song in the Hall of Fire, as Aragorn would, but Radanir would have none of it.
'Travel to Thorenhad, north of the Bruinen Gorges in the Trollshaws, and speak to Elrohir. He will introduce you to Radanir. Once the Ranger is told of the messages from Lórien, you can seek out the others Master Elrond suggested.'
Elrohir is at Thorenhad, the camp of the sons of Elrond, north of the Bruinen Gorges in the Trollshaws.
Pethelen has suggested a first step for your urgent errand: a visit with Elrohir at Thorenhad for an introduction to Radanir, one of the Dúnedain currently staying at Thorenhad.
Elweleth is by the horses at Thorenhad, the camp of the sons of Elrond in the Trollshaws.
Elrohir has told you to speak with Elweleth, for she will know where Radanir the Ranger has gone, if anyone will.
Radanir is at the Laenan cave system, located in the north-west reaches of the Gladdalf, the wood-troll infested marshes of the North Trollshaws.
You have spoken with Elweleth at Thorenhad, and she told you where to find Radanir the Dúnadan.
Orc-warriors, Orc-defilers, and their leaders can be found within the confusing network of tunnels known as Laenan.
Radanir has agreed to join the Grey Company on its journey south to aid Aragorn, but he wants you to deal with the Orc raiding-party he tracked through the Trollshaws.
Elrohir is at Thorenhad, his camp in the Trollshaws.
You have given Radanir the message for which you sought him, and he has agreed to join the Grey Company on its journey south. You should return to Elrohir now that you have dealt with the Orc raiding-party in the Laenan caves.