Jia Li Huang, 63, was discovered in a property on Atkinson Road in Urmston, Greater Manchester, after officers were called amid concerns for a woman's safety at 12.30 BST on Monday.
Police said a man Tasered at the scene was arrested on suspicion of murder.
Mr Huang's family said he was "a good man" who would now be at peace.
A statement said: "My father was an amazing person, he was brave and he thought he was invincible, but sadly his life was taken away.
"We never thought we would lose our father this way. It is such a horrible way to die, he never deserved this, he was a good man."
The woman suffered head injuries and was taken to hospital, Greater Manchester Police said.
A man who was found dead with head injuries was "amazing and brave and thought he was invincible", his family has said.