A six-year-old boy fell to his death from a second floor window as he read a Mr Men book during last Summer's heatwave, an inquest heard this afternoon.
William Coy sat on the window sill leaning against the open window of his bedroom reading his book when he fell to the ground.
He was discovered lying unconscious on the concrete patio at the back of the terraced property.
The hearing was told that the window was open because his bedroom had become "unbearably hot" during the heatwave of July last year.
The window in the private rented property was described as a new UPVC window which had been fitted without safety catches.
William's father Richard Coy, 37, an adult care adviser with Lincolnshire County Council , in a statement read at the inquest in Boston, Lincs said that William went to bed at around 7.30 pm but he came downstairs three times resulting in him being told to go back to bed to sleep.
"After about 30 minutes Lydia came to me to say why was William asleep outside. She insisted she wasn't joking.
"I opened the back door to see William was laid on the floor. His glasses were on the floor beside him.
He said he then dialled 999 and paramedics arrived at the family home just minutes later.
William was rushed to the Queen's Medical Centre (QMC) in Nottingham after the incident on the evening of Tuesday, July 17 in Lindum Avenue, Lincoln, last year.
He never regained consciousness and despite the best efforts of doctors at the hospital, William died two days later on the morning of July 19.
The Mr Men book he had been reading was later found underneath a bench on the patio.
Paediatric intensive care specialist Dr Charlotte Goedvolk said that his death was due to a severe traumatic brain injury.
Insp Lee St Quinton, of Lincolnshire Police child protection unit, who carried out an investigation into William's death , said "My impression was that these parents were very loving towards their children and it was a good family unit."
He said that the investigation revealed nothing that raised any suspicion.
William's mum and dad Kate and Richard called him their 'little hero' as William's organs were donated to help save other people. Neither parent attended the inquest.
Richard Coy, in his statement, said "William was a very intelligent and inquisitive child. I called him my little buddy or my little man.
"He was very active and saw no danger.
"He would often sit on the window sill of his bedroom and read his books or play with his things. He liked to sit on the window sill because the light was better."
Monks Abbey Primary School held a special event in his honour back in November at which classmates wore bright colours and took part in activities to remember his life.
Shortly after his death, his mum Kate said the whole family, including William's elder sister Lydia, were devastated.
"We are struggling a month on to live without our little hero, but we are filled with love and we have a very good support system around us," she said.
“We want to thank the community for being here for us, and helping us to celebrate our beautiful boy William.
"His teachers, friends and his family all came to give our boy the best life celebration.
"He was the biggest personality and this has left a huge hole in so many people's lives.
"When other families are moaning that the kids still have time off, I’d give anything to be uniform shopping for them both or refereeing an argument.
"Time is so precious. We only got six and a half with William but he filled those as much as he could with laughter, love and mischievousness.
"He has changed lives from the gifts he chose to give other families and that makes him our superhero."
Kate said that she would regularly watch medical programmes with William and that’s when he decided he wanted to help people in the future.
She said: “We want to raise the awareness of discussing organ donation with children of all ages.
"William was very proud of me being accepted onto the nursing degree programme at the University of Lincoln.
"We use to watch medical programmes and it raised questions which we would sit and talk openly about and he decided that he would help others when he was older if something was going to happen to him, as have I and his sister and his dad."
Coroner Richard Marshall recorded a verdict of accidental death.
He said "He went to his bedroom in the evening of 17 July and the bedroom window was open to some extent. He appears to have been reading a book while sitting on the window sill when he fell out onto the concrete patio. He suffered a catastrophic head injury as a result.