Background
He was born in Madrid on the 22nd of June 1823.
He was born in Madrid on the 22nd of June 1823.
He was educated in the capital, took the degree of civil engineer
As such as he directed important works in Asturias and Galicia, entered the Cortes in 1856 as deputy for Vigo, and sat in all the parliaments until 1867 as member of the Union Liberal with Marshal O'Donnell.
He attacked the Miraflores cabinet in 1864, and became under-secretary of the home office when Canovas was minister in 1865.
In the Cortes of 1872 he took much part in financial debates. He accepted office as member of the last Sagasta cabinet under King Amadeus. On the proclamation of the republic Elduayen very earnestly co-operated in the Alphonsist conspiracy, and endeavoured to induce the military and politicians to work together.
He went abroad to meet and accompany the prince after the "pronunciamiento" of Marshal Campos, landed with him at Valencia, wasmade governor of Madrid, a marquis, grand cross of Charles III, and minister for the colonies in 1878.
He always prided himself on having been one of the five members of the Cortes of 1870 who voted for Alphonso XII -when that parliament elected Amadeus of Savoy.