19th century


 * Sebastiene attempts to hunt down the Doctor. (TDA: The Doctor Trap)
 * Ancestors of Gwen Cooper settle in the Cardiff area, one of whom may be Gwyneth, who later encounters the Ninth Doctor. (DW: The Unquiet Dead, Journey's End)
 * The Torchwood Institute is founded. (DW: Tooth and Claw)

Decades

 * 1800s
 * 1810s
 * 1820s
 * 1830s
 * 1840s
 * 1850s
 * 1860s
 * 1870s
 * 1880s
 * 1890s

18th century Timeline 20th century