I found my missing connections by tracing maternal lines:
Osman/Osmund Dutch was married twice. First to Margaret Haywell. She was the mother of Robert, Margaret & Marie/Mary Dutch. Thus Osman/Osmund, Robert, Samuel, George Sr, George Jr, Arthur Sr, Arthur Jr, Hannah Dutch now works.
I had from Ipwich Vital Records, the marriage intentions of a George Dutch and Sarah Abbot dated 4/21/1736 and I was stuck, as there appeared to be a generation missing. Sarah must have been very pregnant when they married, as George Jr was born 5/29/1736.
Osman married (2) Grace Pratt with whom he had 10 more children of which Samuel (md to Susanna More) was the 6th born. Thus Osmund, Samuel (md Susannah More, daughter of MAYFLOWER 1620 passenger, Richard More), etc now works as well.
Robert and Samuel were 1/2 brothers. Robert was the first born abt 1621-1623; Samuel born abt 1645, was Osmund's ninth born of a total of thirteen children.
I did not have Samuel [Jr] Dutch's wife (Prudence Wardwell). He appears to be the son of Samuel Dutch Sr and Abigail Giddings, and brother of George Dutch Sr.