Colchester Castle will be lit up blue tonight to mark International Angelman Day. 

The castle will be bathed in blue at the request of the family of north Essex boy William Goodson. 

Every year on February 15, International Angelman Day spreads awareness for a rare neuro-genetic disorder called Angelman syndrome.

Angelman syndrome affects 1 in 12,000 to 20,000 people around the world.

Some children with Angelman syndrome have seizures, while others have decreased muscle tone or exaggerated reflex responses.

Four-year-old William, of Messing, was diagnosed with Angelman Syndrome when he was nine-months-old.

Medics warned his family he might never speak because of the condition and may never walk.

William suffers frequent seizures, during which he often stops breathing, and has endured 50 trips in ambulances so far during his short lifetime.

He has also contracted a life-limiting superbug which attacks his respiratory system.

William will also never be able to live independently.

However, despite the numerous setbacks he is facing, his family say he is a happy and determined boy.

His parents Emma, 39 and Andrew, 40, are fundraising to offer him the best quality of life possible.

The family has to fundraise constantly for specialised physio, sensory therapy, speech and occupational therapy and more.

To donate to William’s fund, visit https://www.justgiving.com/fundraising/bemorewilliam-wgoodsongarden