Fosco Took
Fosco Took was a son of Isembold Took and thus an elder cousin of Bilbo Bagginse's, who vanished when a lad, owing to Gandalf.Fosco was known as a great traveller and used to imitate the howling of Wargs to frighten young Bilbo.
References:
- MERP:Lords of Middle-earth Vol III: Hobbits, Dwarves, Ents, Orcs & Trolls