A woman and her 22-year-old son found dead at their Oxfordshire home were "tragically and prematurely" killed, their family has said.
Sally Cox, 43, and Martin Faulkner, 22, were attacked at the home they shared in Banbury. They were found on Monday.
Michael Kelly, 45, of Hatch Road, Swindon, has been charged with their murders.
In a statement, the family said Ms Cox and Mr Faulkner, who were found dead in Mold Crescent, were "dearly loved".
Mr Kelly also faces one charge of causing grievous bodily harm. He will re-appear in court on 24 February.
The family tribute said: "The two beloved members of our family were tragically and prematurely taken from us on Monday.
'Heavy bladed instrument'
"Sallyann was a dearly-loved mother, daughter and sister and a friend to many.
"Martin was a dearly-loved son and brother and also a friend to many.
"They will be sadly missed by all the family and all that had the pleasure to know them."
The family added funeral details would be announced at a later date.
Post-mortem tests revealed Ms Cox died from multiple head injuries "consistent with a heavy bladed instrument".
The tests revealed Mr Faulkner died as a result of multiple sharp weapons injuries.
Officers said a 19-year-old girl who was also at the house remained in Oxford's John Radcliffe Hospital where her condition was improving.