So I made some merges in this area where there were quite a few.
I ended up merging and creating this tree conflict but, after trying to work this out I've come up with a theory.
Heres the rundown:
Firstly, the record of Marianne immigrating lines up with Martin and Marie.
Secondly, the marriage reports Ernest [[Johann Gottlieb Ernst Dreckow as the father.
Now, Martin died in 1864.
Marie marries in 1866
Marriage of Johann Gottlieb Ernst Dreckow and Marie ...
dist MtB, book 67 page 127, South Australia
Marianne marries in 1874
Now, I think Marianne referenced [[Johann Gottlieb Ernst Dreckow in her marriage.
I'm updating the profile to reflect this.