The Took family was an old and venerable one in the history of the shire, descending from the Old Took. They also had quite a reputation for "queerness", a quality not exactly valued by Hobbits. They were always going off on adventures and such, a quite un-Hobbitlike thing to do.
At Rivendell he officially became one of the Fellowship of the Ring. Along with Merry, he befriended old Treebeard, leader of the Ents.
Compare: Merry