54 year old Mark Bloomfield was injured following an incident on High Street last Thursday.
The charity worker, who is originally from Stratford Upon Avon, supported causes worldwide and believed in empowering others to help themselves and improve their circumstances.
His family said: “Mark Bloomfield built a legacy that will continue to live on in the countless lives that he encountered. As special assistant to Mother Teresa in Calcutta, he was an essential contributor to her mission and to those she cared for.
“In India, he organised free cataract surgery camps and founded schools that gave rare access to education for girls. In Africa, he helped preserve wild game by introducing ultralight aircraft to combat the onslaught of poachers.
“He will be remembered for all of this and more by his mother and three siblings.”
Mr Bloomfield’s family added that he would continue to have an impact on others’ lives as a registered organ donor.
Detectives are continuing to investigate the incident, and a 61-year-old local man is currently remanded in custody, having been charged with causing grievous bodily harm.
Two others – a 21-year-old man and a 50-year-old woman – were both arrested in connection with the matter and are currently released under investigation.
Senior Investigating Officer, Detective Chief Inspector Darren George, from South Wales Police’s Major Crime Team said: “My sincere condolences are passed to Mr Bloomfield’s family, after he sadly passed away as a result of his injuries.
“A major incident room has been set up at Cockett Police Station and I am keen to hear from anyone who was inside the Full Moon Public House on High Street, Swansea, between 11.30am and 3.15pm on Thursday, July 18, and who may have witnessed an altercation taking place.
“I am also keen to hear from anyone who was on High Street later in the day, between 2pm and 3.15pm, who may have witnessed an incident outside the Full Moon Public House. Anyone with dashcam, mobile phone or CCTV footage from High Street, between 1pm and 3.15pm, is also urged to contact us.
“No matter how insignificant your information or content may seem, please do come forward as it could make all the difference to the investigation and to the victim’s family.”
South Wales Police can be contacted via 101, quoting occurrence 1900262179. Footage and Information can also be submitted online via a public portal: https://mipp.police.uk/operation/62SWP19A92-PO1
Alternatively, Crimestoppers can be contacted 100% anonymously on 0800 555 111.