By Bradley Jolly Thomas Kingston had lunch with his parents moments before he was found dead at home, an inquest heard. The financier, 45, died as a result of a “traumatic head wound,” the hearing was told on Friday, days after he was found lifeless at the £3million mansion in Gloucestershire. A gun was found near the body of the husband of Prince and Princess Michael of Kent’s daughter Lady Gabriella Kingston. The coroner told the court Mr Kingston, who lived in London, had been involved in a “tragic incident” which resulted in his death. Sitting at Gloucestershire Coroner’s Court, senior cor…