:If you wrote the text at http://www.berkhofberkhoff.info/surname.html then you can follow the procedure at Wikipedia:Donating copyrighted materials so we can verify that and then we can simply reinstate the material I deleted.  

 :If you didn't write the source webpage, then the information can still be reinserted, but it will need to be rewritten, preferably from scratch to avoid copyright issues. 

 :Finally, translations are restricted by the copyright of the original, as well as the translator. So if you took someone's copyrighted text and translated it, you couldn't place it on Wikipedia without their permission (which would need to be verified as above). I hope that answers your questions. If not, let me know and I'll try again. ^_^