"I presume it was about 1964-65 when he started riding horses for us," Tony Dennis said. "In the 70s and 80s we had some really good horses - and he rode them all."
The dozens of horses Robinson rode for the Dennis brothers included The Diamond One's great grand-dam, The Dimple, who won the corresponding race back in 1981 beating home Powley.
"They had some real goes over that year," said Dennis.
Robinson moved from jockey to trainer for the brothers and the success continued.
"[The Dimple] went on and left The Grin and Ally trained The Grin for us, and of course The Grin left The Jewel [the dam of The Diamond One].
"We've got no idea how many winners [Robinson] trained for us - in fact, I've got no idea how many winners I've trained myself.
"It was just an automatic thing - he rode our horses. We had a great association with him."
The Jewel was a top performer in her own right, winning the 2005 International Stakes at group one level after winning the 1000 Guineas at Riccarton in 2002.
Her talent has rubbed off on The Glitzy One and The Diamond One, who were both bred in Australia when The Jewel was sent across the Tasman to be served.
The Jewel's mating with Tale Of The Cat was a last-minute decision after failed attempts with Red Ransom. The Jewel caught equine influenza during the 2007 Australian outbreak soon after foaling The Glitzy One and was forced to stay on because of quarantine restrictions.