In January of 1863, Helen Maria eloped with Samuel William Shaw and married in the neighbouring county of Hertfordshire. Her father tried to discourage them from marrying as he did not really approve of Samuel William and Helen was only 16. Consequently there was a great rift between the couple and Helen Maria's family.
In 1867, John Oliver`s youngest son, Henry Kinnaird, married Mary Atherstone Bird , daughter of a wealthy and prominent London doctor. Henry was managing an iron foundry in Wales at the time of their marriage and their first child, a daughter, was born there. In 1870, the family moved to Allahabad in India where Henry Kinnaird managed an iron foundry for railway building. Three sons were born there but only one survived. Henry Kinnaird died in London in 1877, of pneumonia. He likely became ill in India.
to Oliver worked on a variety of engineering projects all over Europe. He never married, and retired to Spain where he died in 1823. I have never uncovered any records of what happened to Ann but there are stories that she may have married into the Spanish or German aristocracy.im John Oliver`s wife Helen died of cancer in 1880. There seems to have been some reconciliation between Helen Maria and her father during the time of her mother`s illness because she named her youngest son (born a few months later in May) John Oliver York Shaw, John Oliver remarried a couple of years later - one Constance Pleasance Odden, daughter of a farmer-miller from Kent. There are many scenarios one can imagine regarding how that came about - but she was likely in service in the York home. John Oliver died in 1887 from a heart attack after a long illness. There is no death record for him and his wife in England, so perhaps they went to the continent - maybe to Spain where Oliver was.
John Oliver was a prime example of the innovative and energetic men who powered the industrial expansion of England and Europe. His daughter Helen Maria certainly seems to have inherited his intelligence, drive and ambition.