, 16, died after falling 100ft (30m) from the top of the Hydro rollercoaster.
Ms Pope said she often reflected on the circumstances that led to her family remaining in Alderney.Her parents were on their way from Chichester, with their children and her grandmother, to New Zealand by boat, and had stopped off in France, when war broke out.
They were advised to make their way to the nearest British territory - and after a brief time in Jersey and Guernsey, ended up in Alderney.After missing the evacuation in June 1940 due to her father's absence on a fishing expedition, Mrs Pope said, the family, including four children, remained in their rented house in Alderney."I think they gritted their teeth and just got on with staying alive."
When the Germans arrived, Ms Pope said her father told them he was an Alderney fisherman and was told by the German commandment to act as their harbour pilot.She said at first he refused, but relented when his family was threatened with a gun, determining the course of their lives for the next five years.
Ms Pope said the Germans were strict at prohibiting contact between islanders and prisoners.
"If you were caught helping anyone basically you could be shot," she said.The Bishop Auckland-born artist was one of the Bevin Boys conscripted to work in coal mines during World War Two and went on to have a 60-year career as a painter.
His daughter, Corinne Aspel, said the range of work on display at the new exhibition was "very special"."Dad was always learning and was keen to try different techniques," she said.
"It will be lovely to see a really good range of his work at the exhibition from different stages of his life and for there to be pieces people won’t have seen before."The exhibition will include images of McGuinness's life as well as his sketchbooks, etchings, lithographs and paintings.