Wars of the Roses

The Wars of the Roses, sometimes referred to collectively as a single War of the Roses, were a series of conflicts involving 15th century England.

Legacy
Most of Chase Mansion was built during the wars. Harrison Chase thought the wars were "charmingly named, but [was] rather a bloodthirsty period in history". (TV: The Seeds of Doom)

Alternate timeline
In an alternate timeline where River Song refused to kill the Eleventh Doctor and all of history took place at the same time at 5:02pm on 22 April 2011, the War of the Roses was reported to have entered its second year. (TV: The Wedding of River Song)

Behind the scenes
In the unproduced Doctor Who movie, Doctor Who Meets Scratchman, it is mentioned that the Doctor was sighted during the War of the Roses.

Guerra de las Rosas