Peregrin Took:

Twenty-nine years old at the time of the War of the Ring, Peregrin Took was usually called Pippin. He was the son of the Thain of the Shire and later became the Thain himself. Pippin, along with Merry Brandybuck, Sam Gamgee, and Fredgar Bolger formed a conspiracy to spy on Frodo. This was revealed at Crickhollow where Sam, Merry and Pippin joined Frodo on his journey to Rivendell. Along with the other hobbits, Pippin was captured by the Barrow-Wight. With the aid of Tom Bombadil, he escaped and there as part of breaking the Barrow-Wight's spell on the mound, Pippin was given a sword. In Rivendell, he was nearly left out of the Company of the Ring, but for the support of Gandalf.

It could be argued that Pippin caused the death of Gandalf the Grey with the stone he dropped down the well in the Guard room in Moria, but there is no conclusive evidence. All the same, it seems probable that the stone alerted either the orcs or the Balrog that there was some intruder there.

Pippin was captured by Orcs at Parth Galen, along with Merry. Thus began the chase of the Three Hunters, as Merry and Pippin were forced to run across Rohan. In an area near a stream with soft ground Pippin managed to escape long enough to drop the brooch from his cloak and leave some of his own footprints. Pippin managed to free his hands during one of the orc squabbles. On the borders of Fangorn Forest, the two hobbits managed to escape fully during the battle between the Riders of Rohan and the Orcs.

Within Fagorn Forest, Merry and Pippin met Treebeard the Ent, which was as Gandalf said; They were brought to Fangorn, and their coming was like the falling of small stones that starts an avalanche in the mountains. (LOTR.517)
For in their tale, the two hobbits started the March of the Ents on Isengard. There they were met after the Battle of Helms Deep by Aragorn, Legolas and Gimli. After the discussion with Saruman, in which Wormtongue threw down the Palantir of Orthanc, Pippin looked into the Stone, and was later taken to Minas Tirith by Gandalf. There he swore service to the Steward Denthor. After Faramir was wounded, and Denthor decided to burn himself and his son, Pippin saved Faramir's life by finding Gandalf in time. Denethor still burned himself though. Later in the battle before the Black Gate, Pippin saved Beregond, by killing a troll.

After the War of the Ring, when they returned to the Shire, Pippin, along with Merry, was one of the two captains in charge of clearing the ruffians of Saruman from the Shire. He, and Merry, were the two tallest hobbits in history.

In the year 64 of the Fourth Age, Pippin rode to Edoras in Rohan, with Merry, and then to Gondor, where he later died. He was buried with honour in a tomb in the Houses of the Dead, and later his tomb was moved to be next to that of Aragorn, the King Elessar.

Primula Brandybuck:

Married to Drogo Baggins, she was the mother of Frodo Baggins. Both Primula Brandybuck and her husband drowned while boating on the Brandywine River.

The Lord of the Rings
The Silmarillion
The Hobbit
The Complete Guide to Middle Earth by Robert Foster