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
French immigration to Puerto Rico a better life, only to be disillusioned and to long for their island. In the field of science Dr. Carlos E. Chardón, the first Puerto Rican mycologist, is known as "the Father of Mycology in Puerto Rico". He discovered the aphid "Aphis maidis", the vector of the sugar cane Mosaic virus. Mosaic viruses are plant viruses. Fermín Tangüis, an agriculturist and scientist developed the seed that would eventually produce the Tangüis cotton in Peru, saving that nation's cotton industry. The following is an official (but not complete) list of the surnames of the first French families who immigrated from mainland