Otho Sackville-Baggins

Otho Sackville-Baggins: (2910–3012) adopted the name of both his parents, effectively founding a new family. His and his son Lotho's ambition was to succeed Bilbo (and later Frodo) as head of the Baggins family; had that happened, Lotho would have called himself 'Baggins-Sackville-Baggins.'