Weed Shrub Identification please.

in Plants
This shrub keeps popping up in my garden in France. Even when very young it is hard to pull up. Does anyone know what it is, please? The one in the photo went unnoticed for a while and is now quite big, a metre tall. I tried to dig it up end of winter but it was tough so I cut it down and this is what has grown since.




Dordogne and Norfolk. Clay in Dordogne, sandy in Norfolk.
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Cornus alba maybe..berries white
Or Cornus sanguineus...berries black.
Pic below are Philadelphus..vein very different from Cornus.
Try the leaf test.
Gently pull the leaf apart as my pics below
Cornus leaves will hang from the 2 halves on a magical silk thread
Definitely not philadelphus @Lyn, but thanks anyway.
Here I have planted Cornus alba sibirica...love it.
Had a huge patch in old garden...1st pic.
The red stems in winter are super.
Every few years you just cut it back to a stump and it regrows.
eg.Cornus sanguineus winter flame