Brown marks on leaves

Hi there,

When my nan died we planted a tree in her back garden, its a form of flowing cherry tree (only a smallish one about 6 foot) - anyway since then my mum and my grandad died and for each person we sprinkled the ashes around it.

Anyway, this was about 2 years ago, last month we sold the property so i decided to dig up the tree and move it to my back garden. i ensured that when digging it up, i got the root ball and ensured to keep it well watered.

The last few days i have noticed some funny brown marks on the leaves - gardening knowledge was not passed down to me before they died and only now do i need it!

I am hoping if someone can tell me if this tree is dying, if it isn't please can someone help me in telling me how to fix it as this tree means quite a lot to me

Thanks for your time