Alderney late 300s, at above the island's only natural harbour. The etymology of the island's name is obscure. It is known in Latin as "Riduna" but as with the names of all the Channel Islands in the Roman period there is a degree of confusion. "Riduna" may be the original name of Tatihou, while Alderney is conjectured to be identified with "Sarnia". "Alderney"/"Aurigny" is variously supposed to be a Germanic or Celtic name. It may be a corruption of "Adreni" or "Alrene", which is probably derived from an Old Norse word meaning "island near the coast". Alternatively it may derive from
Succession to the French throne "without intent of returning." They also cite the opinion of Charles Dumoulin, a French jurist of the sixteenth century: Common sense requires that princes of the blood who have become foreigners be excluded from the throne just as the male descendants of princesses. The exclusion of both is in the spirit of the fundamental custom, which overlooks the royal blood in princesses only to prevent the scepter from falling in foreign hands. For this reason, Orléanists also exclude the Orléans-Braganza (Brazilians) and Orléans-Galliera (Spanish), junior descendants of Louis Philippe, King of the French, from the succession to the French throne.