He was prime minster for 15 years, at the time only Pitt younger and Warpole had been prime minster longer.
His skills had been recognised by Pitt younger and others. When Pitt resigned he became foreign secretary. When Pitt returned as prime minster in 1804 Liverpool became Home Secretary. He was offered position of prime minster when Pitt died but refused as doubted his ability to control commons. When his predecessor Perceval was assassinated, he accepted the position of prime minister.
In 1820 George IV became King. He handled the King wanting to divorce his wife Caroline well. He helped found national gallery.
Liverpool Street station in London is named after him. I had not heard of him until reading this book.
He resigned after having a stroke. He died the following year.