Merry and Pippin
When Pippin was an infant, he spent his nights crying. Merry and his parents arrived from Buckland to find two sleep deprived, desperate adults and one squalling boy. As four bemused parents stood by, Merry picked up the baby, sang him a lullaby and rocked him to sleep.
In the fields of Cormallen, Pippin woke up screaming from his nightmares and refused to go back to sleep. For two days the healers fed him medicines that never made his eyes close, until Merry could obey the summons of the king. Merry arrived, cradled his boy despite the healers' outcry, sang him a lullaby and rocked him to sleep.
During the long days in Gondor, when Merry could no longer move without pain, Pippin sat beside his cousin by the fire and watched as Merry struggled to keep his eyes open and spoke in an ever diminishing voice. When the sun sank low and the fire grew bright, Pippin helped Merry back to bed and covered them both with a blanket. Then Pippin held Merry in his arms, sang him a lullaby and rocked him to sleep.