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
Henry Grey, 1st Baron Grey of Groby attainder. Those in Leicestershire centred on Bradgate House in its manor of Groby, a few miles from Leicester. As the new Lord Grey of Groby, aged 58, he took up residence at Bradgate and devoted most of his energies to strengthening his family's position in the County. This included reviving the feud and intense competition between the Greys and the Hastings earls of Huntingdon which had enlivened and divided Leicestershire for much of the early sixteenth century. Grey married Anne (1542–1613/14), daughter of William, 2nd Lord Windsor of Bradenham, Buckinghamshire. Henry and Anne had four sons and two daughters including: