Meischen family

I am looking for ancestors from Oldenburg and hope you can help me.

My great great grandfather was Dietrich Meischen, born in Oldenburg on 12 Feb 1848. He emigrated to America but I don’t know where/when. He married Wilhemina Rudloff in Texas, USA.

Dietrich’s father was Friedrich MEISCHEN, botn 1813 in Germany. He died in 1861, I assume in Germany.

Dietrich’s mother was Margaretta Harmann, 1826-1894, also born in Germany.

Thank you in advance,

Faith Darilek