quest name: Book I, Chapter 8: Master of the Wood
optimal level: 15
When you were in Buckland investigating the Nazgul's incursion, you spoke with Fredegar Bolger, who revealed information about Frodo Baggins and the Enemy's Ring. Crebain attacked and may have overheard the hobbit's words.
Objective: Talk to Tom Bombadil.
Tom Bombadil's house is at the far eastern end of the River Withywindle in the Old Forest.
Strider told you to seek out someone named Tom Bombadil and ask for his aid finding the crebain who flew into the Old Forest.