Short answers, pulled from the story.
Henry Colburn entered the world in 1784 and died at his house in Bryanston Square on the 16th of August 1855. Records from the London Metropolitan Archives Parish Registers list his age at death as 65, while the 1851 census claims he was 66 and born in Chelsea.
Henry Colburn published Lady Caroline Lamb's novel Glenarvon in 1816 which marked the beginning of the silver fork novel genre. William Hazlitt coined the phrase silver fork to describe this fashionable mode of social fiction that gave readers insight into the lifestyles of rich and aristocratic families.
On the 25th of January 1817, Henry Colburn issued the first number of the Literary Gazette at one shilling per copy. This publication became the earliest weekly newspaper devoted to literature, science, and arts to gain reputation and authority before merging with the Parthenon in 1862.
Following the success of Glenarvon and France, Henry Colburn published the first edition of John Evelyn's Diary in 1818 and Richard Griffin, 3rd Baron Braybrooke's edition of Pepys's Diary in 1825. Expanded editions of these historical documents appeared in 1848-49 and 1854 as part of his significant output of archival material.
Henry Colburn retired from business in favor of Messrs. Hurst & Blackett but kept his name attached to select books until he died on the 16th of August 1855. His copyrights went to auction at Southgate & Barrett on the 26th of May 1857 producing about £14,000.