Thousands of tributes have been pouring in for baby Carter Cookson who tragically lost his fight for life.
The South Shields tot battled for 24 days after suffering three cardiac arrests within hours of being born on Boxing Day.
Doctors said only a life-saving heart transplant could save the youngster, but sadly a donor wasn't found in time.
Sarah and Chris tragically lost their first son Charlie in 2013, and have since set up a charity in his name, the Charlie Cookson Foundation, devoting their lives to supporting the parents of seriously ill children.
This morning Sarah said: "Our boys were so brave... we are both hurting so much."
Scores of Shields Gazette readers have been leaving tributes to Carter and his family.
Brenda Mary Thompson, said: "God bless you baby Carter R.I.P. little baby angel... thoughts and prayers for strength for his family... we all thinking of you .xx"
Julie Vanessa Clark, added: "No words imaginable can explain how the poor parents will be feeling. I am devastated to hear of baby Carter's passing. I prayed that a donor would be found, I'm so, so sorry. RIP little Carter, love and sympathy to his parents and family."
Emma Kinlen, said: "No parent should have to go through this, to have to do it twice is just heart wrenching, R.I.P beautiful boy."
Joanne Waldron, added: "So very, very sorry for your loss of yet another beautiful baby boy."
Natalie Mary, said: "This poor family have been through so much, life is cruel. Thoughts go out to them, rest in peace beautiful boy."
Tracey Dodds Was Sutcliffe, said: "Heartbreaking news, RIP baby Carter my heart goes out to all of your family, hope you are flying high with your big brother little one."
Kevin Farrell, said: "God bless little man, thoughts go out to his family and friends, words can't console nor put peace to such a tragedy. Heaven gained another beautiful soul."
Gemma Taylor, said: "Thinking of Carter's family at this very sad time. Fly high with your brother beautiful. Sleep tight. Your mammy and Daddy loved you and your brother dearly. Deeply in my thoughts."
Judith Johnston-Tindle, said: "Rest in peace Carter. Safe in the arms of your big brother Charlie ."
Janice Robb, said: "So very sad too beautiful for this earth. You're now with your big brother fly high little man RIP thinking of your family at the heartbreaking time."
Margy Nelson, said: "So sad how do you ever recover from loosing a child poor parents loosing two, RIP baby boy."
Jo Purves, said: "Safe in the arms of Jesus, RIP little one."
Karen Musgrove, said: "So very sad and devastating for the parents. Condolences and so much respect for the family."
Maria Wilkinson, said: "Deepest sympathy to his parents and family. I can't even begin to imagine the heartache they are going through. God Bless them and their little angels."
Maria Brown, said: "It's so sad some families get far more than their share of grief can't bear to think about how they must be feeling."
Gill Woodward, said: "This is heartbreaking for both parents and family xxx R.I.P little Carter. You can now play with your big brother Charlie in heaven."
Shelley Beckett, said: "Heartbreaking to loose one baby, but two... Lost for words, life's so cruel."
Scott Baxter, wrote: "Sleep tight baby boy, fly high with your big brother."
Tracey Bell, said: "Absolutely heartbreaking. RIP beautiful boy in the arms of your big brother."
Sylvia Neilson, added: "R.I.P. little boy my thoughts are with your mummy and daddy."
Jan Colling, said: "I'm so sorry to hear the very sad news about this beautiful baby boy. May he rest in peace. Prayers are on going for his heartbroken mum and dad."
June Tate, added: "So heartbreaking to hear this very sad news. Thoughts with all the family."
Winnie Nesbitt, said: "Fly high with the angels little one, thinking of his family at this sad time."
Elaine Spence, said: "Awe god bless him, my thoughts and prayers are with his family so so sad, sleep soundly little one."
Sylvia Weetman, said: "So sad the angels took you gently by the hand and took you up to heaven to play with your brother, thinking of you both at this sad time hugs to you both."
Caron Baker Fletcher, said: "Heartbreaking. Hope knowing he's with his big brother brings a little comfort to all of their family."