The family of a mother and her young son killed in their home said they would be "sadly missed".
Suzanne Jones, 34, and her two-year-old son William were found dead at their home in Glanmorfa Terrace, Porthmadog, Gwynned, on Friday night.
Mrs Jones's husband - and William's father - David Wyn Jones, 42, has been charged with their murders, police said.
Neighbours said the couple also have two daughters, Antonia and Amy.
Mrs Jones's mother Eileen Holt said in a statement released by police: "We will all miss Sue and Wil so much. Sue was a fantastic mum and daughter and Wil was a lovely little boy who will be sadly missed by us and his sisters.
"We are now concentrating on looking after our granddaughters and ask that our privacy is respected."
North Wales Police were called to the address in Glanmorfa Terrace at 9.20pm on Friday and the pair were declared dead at the scene.
Detective Chief Superintendent Neill Anderson said: "Our thoughts and deepest sympathies are with the family and friends of Suzanne and William at this very difficult time.
"The family members are being supported by specially-trained officers and I would ask that their privacy is respected."
David Jones will remain in custody before appearing at Caernarfon Crown Court.