| 1840 | Feb 10 | Queen Victoria married Prince Albert of Saxe Coburg-Gotha.1 |
| 1841 | Mar 04 | Augustus Pugin published True Principles of Pointed Architecture. |
| Mar 04 | William Henry Harrison inaugurated President of the United States. |
| Apr 06 | John Tyler inaugurated President of the United States. |
| 1842 | Jul | Dante Gabriel Rossetti leaves King's College School.2 |
| 1843 | Dec 19 | Charles Dickens' classic Yuletide tale, "A Christmas Carol," was first published in England.1 |
| May | John Ruskin's Modern Painters vol I published by Smith, Elder & Co.4-52 |
| May 14 | John Ruskin encountered the stained glass of Rouen4-62 |
| 1844 | Sep 09 | John Ruskin arrived in Venice, dismayed at the destruction on Casa d'Oro.4-67 |
| 1845 | -- | Potato Famine of 18453. |
| Mar 04 | James Knox Polk inaugurated President of the United States. |
| 1846 | -- | John Ruskin's Modern Painters vol II published.4-55 |
| Aug 15 | Walter Crane born in Liverpool. |
| 1848 | Feb 18 | Louis Comfort Tiffany born in New York, New York.1 |
| Apr 10 | John Ruskin married Euphermia Gray at Bowerswell, Scotland.4-84 |
| Dec 31 | First formal meeting of the Pre-Raphaelite Brotherhood.2 Founding members included William Holman Hunt, John Millais and Dante Gabriel Rossetti.6 |
| 1849 | -- | John Ruskin published The Seven Lamps of Architecture.4-55 |
| Mar 05 | Zachary Taylor inaugurated President of the United States. |
| Mar 20 | Maria Longworth Nichols, founder of Rookwood Pottery, born in Cincinnati, Ohio. |
| Sep 30 | Charles Fairfax Murray born.5 |