MARTHA JANET GAMMELL, known as Jessie, was the 8th child and only daughter to survive childhood of Capt. James Gammell and his wife Sydney Holmes. She was born in Edinburgh on May 7th 1836. Her parents moved to Bath in the 1850s, and she was married there at St, Saviours Church on January 25th 1866 to JULIUS ALFRED BERTRAM, a solicitor and son of Charles Bertram, a wine merchant. This Charles Bertram's sister, Rosa Bertram had married Jessie's uncle Ernest some fifteen years earlier. Jessie and Julius had an only child JULIUS who was born at the end of 1866 and Jessie died in the summer of 1868, after giving birth to a stillborn second child.

In 1883, Julius Alfred married for the second time, his bride being MIRIAM SOPHIA ADELAIDE MESSITER (nee GAMMELL), widow of Colonel John Messiter, and only daughter of Major William Gammell. There were no children of this second marriage, but it was through his second wife that certain Gammell items, for example, a portrait of Major William Gammell, and other things passed into the Bertram family.

JULIUS BERTRAM (1860-1944) the son of Jessie and Julius Alfred, became a lawyer like his father. He married MARJORIE SUTTON (1877-1947), lived at Abingdon Hall, near Cambridge, and practised in London. He and his wife were occasional visitors to Drumtochty, and Sydney James Gammell and his wife often visited the Bertrams at Cambridge. Julius died on November 5th 1944.

Julius Bertram and his wife Marjorie Sutton had one child OLIVER HENRY JULIUS BERTRAM born in 1910, who became a barrister in London, and retired to live at Parracombe in Devon. He married ANNE CLARKE and they have two children, JULIUS born in 1944 and JANET born in 1946.