Hi, I know of the family, not much detail, believe these were my family. I am the daughter of Ernest Noel Oetzmann, he was born Dec 1909, he had sisters Dorothy, Barbra and Ursula.
This family also was the same family of Oetzmann and co, other family names I know of are Ada and Blanche.
Sorry I can't help you more than that, I do have a brother and he knows far more than I do, I believe he has had more success with the family tree and he has mentioned a Suffolk connection, also I think mentioned has been a Sarah, Thomas, Alfred and I have heard my brother mention a Henry.
Kind regards Sally Horncastle ( was Sarah Oetzmann)