Complex sentence: After the strain of the fight with the so-called "Wee Frees" in 1904-5 his health broke down, and he went to Australia for recovery, but died at Melbourne on 22 December 1906.
Split into simpler sentences: After the strain of the fight with the so-called "Wee Frees" in 1904-5 his health broke down. However, and he went on a trip to Australia to recover his health, and sadly died in Melbourne on 22 December 1906.