Gilbert was educated at Trinity Grammar School, Kew, Vic., as was
Geoffrey Adeney (q.v.) who co-authored with Gilbert a book of poems
Wrought of the Mist (1919). Gilbert and Adeney were early champions of the works of
Martin Boyd (q.v.), who had also attended Trinity Grammar. They reviewed his first two novels for the school magazine
Mitre and were probably the first to reveal publicly that these novels, written under the pseudonym Martin Mills, were in fact by Boyd.
