The Holbrook family were from England and immigrated to Australia around 1911. They settled in Balingup, WA where they were farmers. Two sons, Thomas and Frank enlisted for WWI. This medal was awarded to 1877 Driver Frank William Holbrook who served with 10th Light Horse Regiment.
After WWI Frank returned to farming. Frank's son was named William Frank and I'm been in contact with William's wife who I'll return the medal to.
Thomas Holbrook did not survive WWI. He died of wounds received in May 1918. Thomas' wife Emma died in December 1918 leaving two young sons as orphans.
Thanks go to Diane M who sent me the medal and the Bernice Holbrook who assisted me with this research.
The returned medal tally is now 1743.