Edmund Blackadder minister, Baldrick. With Baldrick working as his prime minister and Parliament dissolved, the Blackadder and Baldrick families have finally triumphed and become rulers of the UK. Although not appearing within their own series or one-off special, various other Blackadders have appeared or been alluded to over the course of the series. Several relatives of the Blackadder family include the Puritan Whiteadders, and the Highlander clan of MacAdder. Various one-off specials have introduced other Blackadders throughout history, from the Roman Centurion Blaccadicus, to a Grand Admiral Blackadder in the distant future who becomes ruler of the universe. At the 2000 Royal
Blackadder Water and joins with that river at the village of Allanton, where Blackadder House and its estate once stood. The Whiteadder then crosses the English Border below Edrington where it joins the Tweed which empties into the North sea at Berwick-upon-Tweed. Blackadder Water Blackadder Water () is a river in Berwickshire in the Scottish Borders area of Scotland, forming part of the River Tweed system. Rising in the Harecleugh Forest plantation just south of the Twin Law cairns, north of the village of Westruther, the headwaters of the Blackadder join with those of the Wedderlie, Edgar, and Fangrist Burns, before reaching