Bonsai

[Saint Jonny]

I dug this up from my in-laws' garden. Apparently it gets berries at some point in the year. Can anyone tell me what it is?

[img]https://micradendra.files.wordpress.com/2011/05/img_5099.jpg[/img]
[img]https://micradendra.files.wordpress.com/2011/05/img_5101.jpg[/img]

One other question: If I were to trunk chop it below the existing leaves, would it kill it? (Not planning this soon cos I want to give it a rest for a year or so)