Alexander was born in Adelaide, South Australia in 1906, the only son of James Strathearn (died Nov 1942) and his wife Mary, nee Reardon.
Alexander was a clerk and had been working in the Territory of New Guinea from 1928.[1] He was clerk of the District Court in Rabaul in 1932.[2] He was appointed a JP for South Australia in 1932.[3]
He married Ruby Eglinton in 1937.[4] She died on 28 May 1938 in Rabaul.[5]
He was appointed a Justice of the Peace for Tasmania, residing in Rabaul, in 1938.[6]
He married again to Adelaide Watt in Rabaul in 1940.
There were no children by either marriage.
Alexander was working as a Supreme Court clerk in Rabaul when the Japanese invaded in Jan 1942. He was captured at Kokopo and interned as a civilian prisoner. He died on board the "Montevideo Maru" when it was torpedoed and sunk off the coast of the Philippines on 01 Jul 1942.