​​​​​Location: Camuy
Date Established: 1910
Date Ceased Operations: 1922
Annual Production Graph
Average Annual Production: 3,140 Tons
Best Production Year: 1916/5,313 Tons​​
Family Ownership: Oliver
Corporate Ownership: Central Alianza, inc.

As stated in the website redescubriendo a puertorico.com, not much is known about Central Alianza.  Some have stated in error that Central Alianza was located where Central Riollano was later established, however, its location can be identified in this Google Map in the general area where today is the Antonio Reyes Intermediate School in Barrio Alianza of Camuy, about 2¼ miles southwest of where Central Camuy and Central Riollano were located.

The July 16, 1910 edition The Louisiana Planter and Sugar Manufacturer states "...confirmation comes this week of the forming of other central in Utuado, under the name of the Central Alianza with a capital of $500,000.  This central will be situated between Camuy and Quebradillas, while the central of the Camuy Sugar Co. will be situated between Camuy and Hatillo...The Board of Directors as at present composed of Messrs. Dornando (sic) Ledesma, President; Honorato Berga, Vicepresident; Sebastian Bonet, Secretary; Juan Pian, Treasurer and Manuel Navas." 

Dornado (sic) Ledesama was probably Puerto Rico born Fernando Pablo Ledesma Fernandez (1877- ) who married Aracelis Marin and after her death marrried Maria Adelaida Oliver Delgado in 1907 and in the 1910 census record appears as a farmer in Arecibo.  In 1917 Ledesma was the Administrator of Central Bayaney.  Honorato Berga Pastor (1854- ) was a Spanish immigrant from Palma de Mallorca who arrived in Puerto Rico in 1891 and married Maria Suau Mulet.  In 1901 he was recognized by the President of the US as Vice-Consul of Venezuela and in 1910 was reported by the American Sugar Industry and Beet Sugar Gazette as being a member of Central Bayaney's temporary Board of Directors.  Sebastian Bonet Berga (1877- ) was a Spanish immigrant who arrived in Puerto Rico in 1895 and was Honorato Berga' son-in-law, married to Magdalena Berga Suau (1892- ).  Manuel Genaro Navas Nogueras (1860-1929)  was a Spanish immigrant from Málaga, Andalucia who married Hortensia Balseiro Zeno (1863-1937) whose family were owners of Hacienda Santa Barbara in Arecibo.

The edition of July 30, 1910 reports that: "The Camuy Sugar Co. lately established and now erecting its central, expects to be able to put 30,000 sacks of sugar on the market for the 1911-1912 campaign, first grinding being scheduled for Decmber 1911.  The establishment of the Camuy Sugar Company's central, with the Central Alianza of Camuy, will give the total of three centrals operating in Camuy, the third being the Soller Sugar Company."   The Report of the Governor of Puerto Rico states Central Alianza production of 3,298 and 2,798 tons of sugar for the years 1911 and 1912.  It does not include Central Camuy which was still under construction. 

After it was established, its principal shareholders were Spanish immigrant from Sóller Andrés Oliver Roses (1872-1937) the son of Catalina Roses Bisbal whose family owned Hacienda Santa Barbara in Arecibo, Puerto Rico born of Spanish parents Manuel Gregorio Ledesma Figueroa (1869-1923) also of Central Cambalache, Spanish immigrant from Mallorca Francisco Perelló Cerdá (1874-1925), Sebastian Figueroa Colón (1850-1932), Spanish immigtant from Blanes, Girona Agustin Plá Puigmoler (1862-1937) and another investor with last name Igartúa.  It is possible that this Igartúa was Rafael Igartúa del Valle (1873-1947), son of Spanish immigrant from Lemoiz, Bisckay Juan Igartúa Alberdi (1806-1884) and Teresa del Valle Sosa, who according to José Ferreras Pagán in 1902 represented his father's estate which included Hacienda Perseverancia in Barrio Cacao of Quebradillas.

Its machinery was that from the recently closed Central Oriente which had been acquired by Central Cambalache for its lands in 1910.​  There are minimal remains of Central Alianza as evidenced by the pictures below, taken in January 2023 and made available courtesy of E. Ginorio. We are not completely sure what structures of the sugar mill these remains pertained to, but neighbors verified they are indeed from structures that belonged to Central Alianza.  In the second picture, you can see to the right accross the street, the four pilons shown on the first picture, which seem to have been related to the chimney.