Hartley has not been on the winning side at his club since September – Saints have slipped to ninth in the Aviva Premiership standings – and on his last two outings his opposite number has been named man of the match.
Former England stars Lawrence Dallaglio and Austin Healey were scathing of his performance in Saturday’s 50-21 surrender to Harlequins, but Jones believes his skipper is still indispensable.
“It’s been a tough time for him,” Jones said at the squad’s two-day training camp in Brighton. “When you are captain of a club that is struggling, a club that has just sacked their coach, it becomes a difficult time.
“That has been reflective of his play, but very good players do compartmentalise things and he’s done that terrifically well, come in and led with effervescence, trained well – he’s been good.
“I don’t watch club rugby to assess them on how they play at clubs. I watch club rugby to assess how they are going to play at international level, which is completely different.
“Some guys can be outstanding club players and be poor at international level. Some guys can be poor club players and outstanding international players.
Hartley has received backing from his club and international coaches (Getty)
“Dylan’s attitude is right, his body is right and he brings something to the table that we need at the moment, which is strong leadership.”
Northampton’s interim head coach Alan Gaffney, who began his role on New Year’s Day in the wake of Jim Mallinder’s sacking, has also given the 31-year-old his full support.
“Dylan has been a figurehead here for a long, long time and has a lot of respect among the players,” Gaffney said. “I have not spoken to Dylan since I’ve been here – he had gone into camp by the time I arrived on Sunday – but I spoke to Eddie about him and he has got the utmost respect for him. I don’t see things…