Here's a sample:
His Grace Alanir Kimar Re'Donan, Duke of Ikhnaton, Marquis of Jullanar, Count of Emeraldis, Baron of Serit Arco[logy], Baron of Gakush, and Baron of Emerald Gate, M[edal for] C[onspicuous] G[allantry], K[night] C[ommander of the Order of] G[ateway], Warden of the Damgar Deep, Defender of the Imperium, First Senator of the Republic of Jullanar, Commander, Jullanar Navy (res[erve]), Chairman of the Board, Sekor SA, Director, Sharurshid, Director, Mustimondos Cybernetics LIC, Karun, Kimushenama, Regent, Imperial University of Jullanar, Patron, Duke of Ikhnaton University, and Sangus, Argushiigi Admegulasha Bilanidin
Duke Alanir is the sector duke for Ley Sector; as such he's perhaps the best, if most extreme, example of the many hats worn by a high Imperial noble. First, he's the head of House Re'Donan, which has two cadet branches: Silauraux, the marquises of Onud, and de Ley, the counts of Tancred. He has six Imperial titles: sector duke, marquis, count, and three baronies. In one of my many departures from Traveller canon, a baron is rarely named for a world; rather; their titles reflect cities and other lands held as fiefs on a mainworld. To give them an appropriately sci fi feel, barons were named for starship construction yards - the Count of Towermorn is also Baron of Yard 5; mines - the Marquise of Helena is Baroness of Drift Twelve and the Marquis of Realmuster is Baron of Platform 80-88; starports - the Countess of Uumpopula is Baroness of Starlanding and the Count of Arsouf is Baron of Richardsport; and plain ol' geographic features, of which my favorite is Baron of Welcomehome, the capital city of the planet Phytore. Duke Alanir's baronies are the Serit Arcology and the city of Garkush on Jullanar and Emerald Gate starport on Emeraldis.
Next are two honors, the Medal for Conspicuous Gallantry (MCG) earned during his naval service and knighthood in the Order of Gateway, and two honorifics, Warden of the Damgar Deep, an astrographic feature adjacent to the Jullanar Drift, and Defender of the Imperium, conferred along with his MCG.
This is followed by his local title, First Senator of the Republic of Jullanar, and military rank, commander in the planetary naval reserve. Jullanar is a republic and the duke is neither head of state nor head of government; he's a senator in the planetary legislature, but his title of marquis and status of patroon of a Merchant House earns him an honorific and other perquisites such as preference on committee selection. He attended the planetary naval academy to earn his commission and deployed on active service in the Jullanar Navy, which is part of the provincial (subsector) fleet. He continues to fulfill his required annual commitment to maintain his rank.
Now we come to the duke's economic power base, his holdings as patroon of House Re'Donan. The house's primary holding is Sekor SA, which builds, sells, and maintains computers and information systems. Sekor doesn't rise to the level of a megacorporation, but it's reach extends across Ley Sector into the neighboring sectors of Fornast, Antares, and the Empty Quarter; they build machines and networks under contract to the Vilani megacorp Naasirka as well as their own brands. Duke Alanir is also a director for two other corporations, the Vilani megacorp Sharurshid and Mustimondos Cybernetics LIC. He's the only high noble in the sector to have a seat on the board of a megacorporation - such is the recognition accorded a sector duke - while Mustimondos is the primary holding of one of the Re'Donan cadets, Silauraux.
Finally we get to Duke Alanir's charitable pursuits: he is a karun (Bilandin, 'director') of Kimushenama, the Vilani equivalent of Médecins Sans Frontières, regent and patron of two universities, and sangus (Bilandin, 'patron') of the Jullanar branch of the Vilani 'Repository of All Knowledge.'