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In page Abando:

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During the 18th century Abando grew to be the most populous elizate of Biscay, with around 2,100 inhabitants.[1] This population was distributed across several rural neighbourhoods composed mostly of farm houses (Basque: baserri). These neighbourhoods were Bilbao la Vieja, Ibarra, Mena-Urizar-Larrasquitu, Elejaberri, Olaveaga, Zorroza and Ibaizabal.[2] In 1835, during the First Carlist War, the siege weapons and artillery used for the siege of Bilbao were stored in the sacristy of the San Vicente church of Abando.