Hello Mrs. Rebholz,
thank you for your inquiry!
On our database you can see that Johann Friedrich Knauer was born at 29 NOV 1881 in Delmenhorst as the son of Heinrich Peter Knauer from Delmenhorst. He left Bremen, Germany, at 17 SEP 1898 and arrived in New York at 30 SEP 1898. This information you can find on www.ellisisland.org. There he was named Friedrich Knauer.
Because I have no more informations about this person I sent your inquiry to Mr. Heuer, our specialist for the parish records of Delmenhorst, and two mailing-lists for the Oldenburg region. I hope you can get more informations about your ancestors! The Oldenburg-list is an open bilingual list.
Maybe you can help us with your informations. We also collect informations about the emigrants in the USA with their wifes and children. I would be proud to present these informations on our page.
Vielen Dank und viel Glück!
Gunter Jüchter