'end in him' is correct and can be used in written English.
It is primarily used to describe an action that comes to a conclusion with a particular person. For example, "The conversation ended in him giving a rousing speech."
If Cameron thinks that this situation might also end in him having to lose his right-hand man, better to do it quickly.
Shipstone believed Alromisse killed their daughter because he feared the outcome of a new round of court hearings would end in him being denied contact, it added.
His outrageous statements and wild trains of thought that end in him oven-roasting a baby, say, or masturbating with a broken arm, are shocking not just in themselves, but because of the blasé delivery.
The view at the club among the coaching staff and in the dressing room is that Januzaj's drift to the fringes may end in him wasting his chance at Old Trafford.
Will this saga end in him leaving the show?
Scenes where Charles canes his callipygian delinquents without compunction usually end in him fucking several students simultaneously.
There he gets into a fight with one of his old friends that ends in him stripping the man of his clothes.
McCaw hangs up his boots after a world record 148 Tests, the last ending in him becoming the first captain to lift the World Cup twice.
Small wonder then that scrum-half Rupert Moon's tireless approach ended in him collapsing with heat exhaustion at the end of the game.
A family issue ended in him not paying for it anymore, so I had to come home".
This may have motivated Nagayoshi to bolster its effects, which ended in him using ephedrine to synthesize methamphetamine in 1893.
