In this task, you are given a question and a context passage. You have to answer the question based on the given passage.

Whose brother joined them in allying with Napoleon?, Context: Despite the failures in Egypt, Napoleon returned to a hero's welcome. He drew together an alliance with director Emmanuel Joseph Sieyès, his brother Lucien, speaker of the Council of Five Hundred Roger Ducos, director Joseph Fouché, and Talleyrand, and they overthrew the Directory by a coup d'état on 9 November 1799 ("the 18th Brumaire" according to the revolutionary calendar), closing down the council of five hundred. Napoleon became "first consul" for ten years, with two consuls appointed by him who had consultative voices only. His power was confirmed by the new "Constitution of the Year VIII", originally devised by Sieyès to give Napoleon a minor role, but rewritten by Napoleon, and accepted by direct popular vote (3,000,000 in favor, 1,567 opposed). The constitution preserved the appearance of a republic but in reality established a dictatorship.
Emmanuel Joseph Sieyès