juliepenfold_70 on Family Tree Circles

My name is Julie Penfold (nee Osborn) I live in NZ but all my research is in UK at the moment.
I am researching the descendants of James Seabrook and Hester - James born 1763 in Hemel Hempstead Heartfordshire and in most of the census records in Kent - married to Hester ? described as a woman not of this parish.
I have traced many of the descendants but have reached a brick wall on who Hester might have been ie her maiden name and where she was born and who were the parents of James from Hemel Hempstead.
My seabrook side is my mother Kathleen Marjorie who at 90 years of age is still living.
My Osborn side is my father and although I have an extensive tree of the direct line back 1600 I cannot find the branches and twigs.His name was Spencer Robert Osborn B1920 but now deceased. He was one of 6 children and the family came from Sydenham Kent England.