Lethbridge-Stewart family

The Lethbridge-Stewart family was a storied one. Notable members include Brigadier Alistair Gordon Lethbridge-Stewart.

Origins
Part of the Scottish Clan Stewart, the family was related to the Stuart kings of Scotland, and when James VI arrived to claim the English throne as James I in 1603, the Brigadier's ancestor, William Lethbridge-Stewart, accompanied him (DW: Terror of the Zygons, NA: The Dying Days).

Ancestors of the Brigadier
Alistair came from a military tradition. (DWM: The Warkeeper's Crown) Major General Fergus Lethbridge-Stewart was the Duke of Wellington's right hand man at the Battle of Waterloo. (MA: The Scales of Injustice)

An Alastair Lethbridge-Stewart, worked for the British government during World War I (PDA: The Wages of Sin).

Descendants of the Brigadier

 * The Brigadier had many descendants who would play significant roles in the history of Earth.

Mariama and her descendants
As a young officer stationed in Sierra Leone, Lethbridge-Stewart fathered a son with Mariatu, daughter of Chief Yembe of the Royoke village. This son, Mariama, was the father of Kadiatu. Kadiatu authored The Zen Military, an exposé of the activities of UNIT published in 2006.

Kadiatu's great-grandson, Yembe Lethbridge-Stewart, led the UN forces during the Thousand Day War between humans and Ice Warriors in the late 21st century and was the adoptive father of Kadiatu Lethbridge-Stewart, whose time travel activities at first proved quite problematic for the Doctor. (NA: Transit)

Kate Lethbridge-Stewart and her descendants
From his marriage to his first wife, Fiona, the Brigadier fathered a daughter named Kate, who spent many years estranged from her father. For this reason, it was not until the events surrounding the Great Intelligence's third attempt to conquer Earth in the 1990s that Lethbridge-Stewart learned that Kate had given him a grandson, Gordon (MA: Downtime)