Suicide?
Lady Gabriella Windsor's husband Thomas Kingston, 45, died from a 'traumatic head wound' and a gun was found near his body in outbuilding of his parents' Cotswolds home, inquest hears
The ex-financier died with a 'catastrophic' head injury, according to a coroner
https://www.dailymail.co.uk/news/article-13145415/Thomas-Kingston-lady-Gabriella-Windsor-husband-shot-himself.html