Groby owned by the Grey family whose estate included Bradgate Park. Sir John Grey of Groby married Elizabeth Woodville. After his death, in battle, she married Edward IV of England. Bradgate Park was the childhood home of Lady Jane Grey, who became Queen of England for nine days in 1553. The Grey family held the barony until it was forfeited in 1554. Thomas Grey, Lord Grey of Groby became MP for Leicester in 1641 and fought on the side of Parliament in the English Civil War. In 1649 Grey was the only aristocrat of the 59 signatories of the death warrant
Bradgate Park those ancient rocks were formed, they were exposed due to the erosion of the rocks above. By this point they were part of the Pangea supercontinent and desert conditions resulted in an accumulation of windblown Loess, which now forms the Mercia Mudstone Group. With the subsequent sinking of the East Midlands crust, these deposits became waterlogged and formed into red clay. It is this clay that was used to make the bricks for Bradgate House. The mudstone is only visible where it was extracted, across the stream from Bradgate House. However, it covers much of the valley floor around and