Michael Oliver, 57, who changed his name to Mikhail Eno in honour of his Ukrainian step-father, was found dead at his home in Gisburn Road, Hessle, near Hull, last Tuesday.
His brother Stuart Oliver said: "As your youngest brother I always looked up to you and I am so grateful for giving so much of your time up to care for mum, who sadly passed away in January this year.
"You didn't have a malicious bone in your body and your generosity was truly unbelievable.
"I am so sorry I didn't get the chance to say goodbye and your loss has left a massive void in all our lives. I am still numb with shock and have yet come to deal with grief, which I fear will follow soon.
"Not a day has gone by when I do not think of you and miss you incredibly."
Mr Eno worked as an engineer at British Aerospace before becoming an armament technician and working in Bedford for several years.
He moved back to East Yorkshire to work as a labourer and then took a part-time cleaning job while looking after his mother.
A man aged 39 and a 32-year-old woman have been charged with his murder