A third body found in a burnt-out house is the daughter of a businessman who is thought to have killed her and his wife before shooting himself.
Kirstie Foster was identified using DNA tests but the cause of her death is not known, West Mercia Police said.
The 15-year-old's body was found last month in the remains of Osbaston House, Maesbrook, Shropshire, two days after her parents, Christopher and Jillian.
Police have said they are not looking for anyone else over the murders.
Millionaire Mr Foster, 50, had seen his company Ulva Ltd go into liquidation and faced losing his £1.2m house.
'Lovely girl'
His mother Enid later said she believed he could not face telling his family that they were on the verge of losing their home.
Brendan Wignall, Kirstie's headteacher at Ellesmere College, had described her as a "lovely girl" who loved horses.
Forensic science experts are continuing to work at the house in a bid to establish exactly what happened in the early hours of 26 August.
CCTV footage recovered from the mansion showed Mr Foster carrying a gun amid burning buildings.
A post-mortem examination revealed that his 49-year-old wife died from a gunshot wound to the head.
But tests are continuing in an attempt to establish the cause of Kirstie's death.
Mr Foster and his wife were identified from dental records.
Three horses and four dogs were also found shot dead in different parts of the property.
Mr Foster had made his fortune developing insulation technology for oil rigs.
At the time of his death the firm owed £800,000 in tax and faced legal action from one of its creditors.
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