Did Henry Quelch a leading figure in the early British Socialist movement have any sons and did they or their sons emigrate to Australia?

Henry Quelch was my great grandmother's cousin. He married twice and had at least 6 sons but I am sorry I don't know whether any of his descendants emigrated to Australia. As for as I know his sons were by his first marriage to his (and my great grandmother's) 1st cousin Sarah Fisher ;Henry George J 1882, William Edward 1884, Eugene Thomas 1886, John Arthur A 1888 & Frank Ralph 1891. By his 2nd marriage to Mary Hames so Florien Ernest 1897. I hope this is of some help to you.