Jordan’s father and other family members described how they felt “betrayed” over the teenager’s horrific death.
Steven Burling gave evidence at the trial and described how he separated from Dawn Cranston when Jordan was in primary school and did not see his son again until he was in his mid-teens.
He said that when they first met up again he thought Jordan looked “healthy”.
Mr Burling, from Seacroft, Leeds, told the court he last saw Jordan before Christmas 2015.
A victim statement was read to the court on his behalf in which he described going through a “living nightmare” coping with the loss of his son and finding out about the death of the baby son he “knew nothing about”.
After the sentencing of the three women, the Burling family released a joint statement.
They said: “It has been truly horrific to learn in court the full extent of the pain and suffering that Jordan went through, and also to discover that Steven had another son who he and the family knew nothing about.
“As a family, we feel we have been denied any knowledge of that baby boy’s existence. We have also been denied the quality time we should have had with Jordan if those responsible for his death had got the medical care he needed.
“We feel betrayed by the people we trusted to care for Jordan.
“Steven and the family will always remember Jordan having a bubbly and chatty personality.
“We have had two years of hell coming to terms with Jordan’s death and we would like to thank the police and everyone involved who has helped to support us through this dreadful time.
“We now want to be left to grieve in peace and to lay Jordan and the baby to rest with the dignity and love they deserve.”
Detective Chief Inspector Nicola Bryar, of West Yorkshire Police Homicide and Major Enquiry Team, said: “Jordan Burling’s death was completely unnecessary and is an absolute tragedy, given the circumstances in which it occurred.
“We are in no doubt that Jordan would still be alive today if those convicted of allowing him to literally waste away and die in front of them had sought the medical attention he so obviously needed.
“Why they chose to ignore the terrible state he was in has not been explained in any reasonable way and remains something only they know. It is almost beyond belief that his mother, grandmother and sister, who should have had his best interests at heart, would allow him to slowly decline towards a death that could so easily have been avoided.
“Jordan’s father and other relatives are utterly devastated that he has died at such a young age and in his family home while surrounded by those whose responsibility it should have been to care for and protect him from harm.
“Those sentenced today failed to act until it was too late and have rightly been found criminally responsible.
“We hope this outcome will provide some sense of justice to Jordan’s other family members and remind people who have caring responsibilities that the law can and will take appropriate action against those who fail to take their responsibilities seriously and cause or allow harm to others in their care.
“Dawn Cranston has also admitted concealing the birth of a baby boy whose remains were found hidden in a bedroom wardrobe for which she has also been sentenced.”