The woman was in her mid-40s. The age of her parents is not yet known. An investigation into what caused the deaths is under way, but the incident is not being treated as suspicious.
Shortly before 1pm this afternoon, we were called to a caravan park near Camborne in Cornwall, where a helper had been unable to get a reply from an elderly couple who lived in the caravan.
We were able to see that there was a figure sat in a chair but they were unresponsive to knocks at the door.
Cornwall Fire and Rescue were called. They forced entry into the property and found that the three occupants were all dead.
More top news
The historic moment was watched by 500 people in the Church in Wales who cheered after the ceremony.
A cold night ahead, with frost and fog for some
Protesters across Europe and the rest of the globe held women's marches following the inauguration of President Trump.