Martin Stenning started a 12-week jail sentence on Thursday just as he was preparing to contest an injunction obtained by Diana banning him from coming within 300 metres ( yards ) of her .
<response> <person>Martin Stenning</person> started a 12-week jail sentence on Thursday just as he was preparing to contest an injunction obtained by <person>Diana</person> banning him from coming within 300 metres ( yards ) of her . </response>