[Just mythoughts]

You're inserting late, late medieval legend into the ancient 1st century accounts. If Joseph of Arimathea was a wealthy tin miner it is not known to history, nor is there any reason to suspect he was. Same goes for that "Christ's uncle" business.

Did NOT Joseph of Arimathea collect Christ's body, only a relative could have done that act? Now where did Mary get taken to.... where did the legends of the tin miner come from?

[SpringheelJack]

Did NOT Joseph of Arimathea collect Christ's body, only a relative could have done that act?

How do we know that, and even if true, how do you extract from that that Joseph was Christ's uncle, as opposed to cousin or grandfather?

The tin miner legends came from Britain. Spain had James, France had Lazarus, and with those examples I guess Britain couldn't resisting staking a claim on a New Testament figure.