Allen,  I 'm not sure if we are talking about the same Peter or not but he would be the sister to my gran gran grandmother Johanne.   His parents Ane and Ivor were not married when he was born so he was baptised  Peder Andreas Svendson.  There is some information that he left Denmark in 1875 leaving behind his wife and daughter.  Let me know if any of  this sounds familiar and I can send you a website that explains more about this family.  

The website below is in Danish but you can translate it with Google translate.  It is part of a dissertation done on women and their illegitimate children from Sankt Hans parish.  You will be able to find Ane and all of her children along with her parents.  Our family is S4.  So look their.  From the information given you will see that even though Peter was listed as their illegitimate child they were really his true parents.  If you would like to contact me for more information you can always email me at jtahyi@aol.com.  Thanks for the information that you sent.

My grandmother was Johanne daughter Madsine.  It has been hard to find information on her since she was not found on the census records.  I was able to find her baptismal record though.  I have also been able to find a decendent of all of Johanne childred expect Laura who we believe died not long after coming to America or on the way over.  Have tried to find the records for when the children of Johanne came to America but have not been able.  Any ideas?

http://uaegte.dk/S1%20-%20S12.htm#S4