Their falls could be even more sudden, but after about 1650, executions tended to give way to quiet retirement. Favourites who came from the higher nobility, such as Leicester, Lerma, Olivares, and Oxenstierna, were often less resented and lasted longer. Successful minister-favourites also usually needed networks of their own favourites and relatives to help them carry out the work of government – Richelieu had his "créatures" and Olivares his "hechuras". Oxenstierna and William Cecil, who both died in office, successfully trained their sons to succeed them.