Hello,
I just read your post today, Nov. 17, 2013.
Rieke Tibbend Siebels is sister to Gesine Siebels in my wife's tree. Gesine and married Albert Ideus. They emigrated to Sterling, Illinois.
I have a lot of information on the Ideus family if you are interested.
Your message is so old, I don't know if you will get this message.
You can answer on ancestry.com or send an email to hpschaub at bell.net (replace the at with the symbol @)
Regards,
Peter