Looking for Thomas Ellis and His Family from UK to Australia

Thomas ELLIS b abt.1829, London. Together with Eliza Plomer/Plummer/Plumridge b abt. 1833, London,d Hay, NSW 1923 (Eliza's father Charles).They had the following children born in Australia: James b 1862,Terang,Vic. d Goulburn NSW. Charles Henry b 1864,Echuca, Vic. m Florence Mallagh & had a number of children. Sophia b 1867, Hay, d 1874, Hay NSW. Alfred Smith b 1869, Hay, NSW.

Looking for:
(a) information from UK prior to THomas & Eliza's arrival in Australia.
(b)arrival by ship to Australia
(c) death of Thomas in Australia.
(d)All information about Alfred Smith Ellis. In 1923 thought to be in Western Australia.