Diego Felípez de Guzmán, 1st Marquis of Leganés

[1] In 1627, Leganés was sent back to Flanders to force the States General to accept Olivares' project of the Union of Arms, and pay for an extra 12,000 infantry soldiers.

After this mission, Leganés held several important political and military posts in the Spanish Netherlands, which earned him the title of Grandee of Spain in 1634.

He besieged Odoardo Farnese, Duke of Parma and Piacenza and, with pressure from Pope Urban VIII, forced him to sign a peace treaty in 1637.

He conquered a large number of cities, but suffered a great defeat near Casale and failed at the Siege of Turin (1640).

After some initial successes in defending Tarragona, Leganés suffered a defeat in the Battle of Lerida (1642),[4] which made him fall from grace.