Looking for My Grandfather Alexander Mcleod of 47 Blenheim St Balaclava Victoria His Son Alexander IN WWI Joined Aug 1914

my father,Alexander Mcleod,born Balaclava,Victoria,served in WW1,landed at Gallipoli,Anzac day,1915.Hereturned,injured from Europe in 1917.he later married Jean Mckay,and they had 4 children,John,Joy,Bruce,and David.
I would like to find information on my family back to my grandfather,also Alexander Mcleod whose last known address was c/o Kew Police Station,Melbourne,Vic.if possible details of my family before this time.