Papa Jim was a prankster who would do everything from skinny dipping to quad biking on Duncan's massively popular channel.

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[{"selector":"#anim-edb5172e-5a6c-4432-8278-0aa8549c92c7 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, -0.0000013700726171350652%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":3500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-8655bb4b-4679-4915-ac50-65459a005ece","keyframes":{"opacity":[0,1]},"delay":0,"duration":4000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-16bf7182-58f6-4c42-bd40-ccdb0947c941","keyframes":{"transform":["translate3d(-115.2381%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":4000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] But while it may have seemed he was related to the YouTube star, he was in fact the grandad of Duncan's assistant, David Tomchinsky.

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Duncan - who has 6.51 million YouTube subsribers - rubbished the speculation as he said in an Instagram video that the senior was “alive and well”.

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It is not known how the much-loved grandad died as his family has not released a statement.

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But Duncan revealed the tragic news on his Instagram account on May 12, 2022.

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He posted: “Thank you for all the laughs and unforgettable memories. I love you, Papa Jim.”

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