George Belt died in 1930 aged 65. He married first Harriet Higo aged 20) in 1866 who died, aged 41 in 1908. In 1900 his 3 children were 11, 9 and 3. He later worked for the Colonial Export Trading company in Poplar and remarried in 1914 while in 1915 his eldest daughter married a clergyman where Belt was a witness and is described as “a commercial manager”. He was a delegate to the Labour Party Conference from the Herald League in 1919 living at 2 Carmelite St, EC4. At that conference Dora Montefiore was also a delegate from the BSP though I have no idea if they met. He became a Labour councillor in the area and there is a block of flats named after him, George Belt House, Smart Street, Tower Hamlets, London E2 0SB built about 1950.
Belt was clearly associated with the Herald League and that organisation was the sponsor of the help for the starving children of Dublin in the Dock Strike in 1913 though the work seems to have to been done by Dora M and friends. So I am sure they were aware of each other and may even have been in political if not personal contact. See her pamphlet on the strike on the MIA
If Belt was a journalist it was for a Socialist paper, possibly Justice, at least until the split of 1916. Whether he went with Hyndman or the Fairchild faction I do not know. If the latter he would have written for the Call. He may even have joined the early Communist party but certainly soon dropped out as most of the old BSPers did.
Ted C