In September 2014, when the fourth generation was introduced, the adjective Kindle was dropped. In September 2015, the fifth generation Fire 7 was announced, starting at US$49.99, followed by the sixth generation Fire HD 8, in September 2016, at US$89.99.
The president with the most children was President John Tyler, who served from 1841 to 1845. He had 15 children between the years 1815 and 1860. He had them with two different wives. Eight were with his first wife, Lettia Tyler, and the other seven were with his second wife, Julia Gardiner.
He even allegedly fathered a child, John Dunjee, with one of his slaves. Some context on Tyler's progeny: Jane Garfield (granddaughter of James Garfield) is 99, making her the oldest living grandchild of a former president, even though Garfield took office 40 years after Tyler. Former Ambassador John Eisenhower is the oldest living presidential child, turning 89 this past August.