John de Warenne (24/30 June 1286 - June 1347), 7th Earl of Surrey, was the last Warenne earl of Surrey. Life John was born on either 24 or 30 June 1286{{efn| Some sources give his date of birth as 24 June 1286. This date was the feast of the Nativity of St. John the Baptist.<ref>From his father's Oxford Inquisition Post Mortem, taken on the Friday after Epiphany, 15 Edw. I: "John his son, born at the feast of the Nativity of St. John the Baptist, 14 Edw. I, is his next heir". [https://archive.org/details/cu31924011387804/page/n435/mode/2up?q=Warrenna "Inquisitions Post Mortem, Edward I, File 47: 633. William de Warrenna. Inq. (Oxford). Friday after Epiphany, 15 Edw. I".] Sharp, J.E.E.S. (1906). Calendar of Inquisitions Post Mortem: Volume 2, Edward I. London: His Majesty's Stationery Office. p.382. Accessed via Internet Archive. Retrieved 17 June 2021. </ref> However, other sources"Chapter Sixteen: The Last Earl". Connolly, S.B. (2021). Defenders of the Norman Crown: Rise and Fall of the Warenne Earls of Surrey. Barnsley: Pen & Sword History. p.186. Retrieved 07 July 2021. give his date of birth as 30 June 1286.}} and baptised on 7 November of that year.He was the son of William de Warenne, the only son of John de Warenne, 6th Earl of Surrey. His mother was Joan, daughter of Robert de Vere, 5th Earl of Oxford. Warenne was only six months old when his father died. John was still a minor when his grandfather died in 1304. Because of this his lands were taken into the custody of the Crown at the time,"Membrane 14d: 1305. March.18. Westminster". Maxwell-Lyte, H.C. (1898). Calendar of Patent Rolls, Edward I: Volume 4, 1301 - 1307. London: Her Majesty's Stationery Office.p.348. Accessed via Internet Archive. Retrieved 11 July 2021. and he was made a royal ward of his relative Edward I of England. He was given seisin of the lands of his inheritance from his grandfather, the late John de Warenne, 6th Earl of Surrey, in April 1306. On 6 June 1306, John was referred to as "the present earl of Surrey." He was knighted on 22 May 1306 at Westminster Abbey along with 266 others, among which included the Prince of Wales, the future Edward II. This chivalric celebration was named the Feast of the Swans. From that time onwards he was much engaged in the Scottish wars. John was one of the great nobles offended by the rise