In a statement released last night, they said they did not regret moving to the area from England:
Everyone who met Dylan fell in love with him. His beaming smile would light up any room and his laugh was the sweetest music.
He loved to cuddle, play tag every morning at the bus stop with our neighbours, bounce on the trampoline, play computer games, watch movies, the colour purple, seeing the moon and eating his favourite foods, especially chocolate.
He was learning to read and was so proud when he read us a new book every day. He adored his big brother Jake, his best friend and role model ...
We will always be a family of four, as though Dylan is no longer physically with us, he is forever in our hearts and minds.
We love you Mister D, our special gorgeous angel.
More top news
Ideas are being sought to get more people involved in sport after participation figures fall three years after London 2012 Olympics.
Scotland's exams body has reassured pupils that "no learner will be disadvantaged" after a backlash against this year's Higher maths exam.
Hospital chiefs asked by NHS regulator to fill vacancies only where "essential" as they face an unprecedented financial challenge.