Metzgen's mother, Esther Almira Bevans (born on 17 January 1869 in Belize and died 1944), was the second wife of his father (the first one was Estelle Greene).
He died of poisoning, on 14 May 1956 On 17 September 2009, Metzgen was posthumously awarded the Order of Distinction from the Government of Belize in recognition of his dedication to Community and Public Service.
Metzgen entered the Civil Service as a Copyist on 4 March 1910, and ten years later he was appointed Internal Revenue Officer.
Metzgen joined the British Honduras Mounted Infantry on 1 March 1906 and the next year he went with the force, under Major F. M. Maxwell, to quell a riot at the Stann Creek Railway.
The same year he accompanied the force again to Sapodilla Cayes on the "City of Belize" to assist in preventing filibustering on the coast of General Bonilla of Honduras.
In 1915 he applied to join the War Contingent but his application was not approved owing to the number of Civil Servants that had already obtained permission to enlist.
He also acted as Private Secretary for His Excellency Colonel Maxwell Hinds with on a special mission of investigation to El Cayo.
He organized and was the Chairman of the British Honduras Cyclists Association and his Cross Country Cycle Races demonstrated in a tangible manner the urgency of a road programme for the Colony.
Metzgen was Chairman of the Debating Club for 10 years and campaigned for the establishment of a Public Library and a Town Hall for Belize.
By means of illustrated lectures, he brought the great Wembley Exhibition from England to the CUs Theatres in Belize and was supported by the late Honorable Lieutenant Colonel Dr. James Cran OBE and Mr. F.R.
At the Shipmates Club at Stann Creek and at the Eureka Band Concert at the Park, Metzgen addressed the people of the District in 1935.
In this connection he said that one of the things that will always linger in his memory is an act three Carib women—all unknown to him—who travelled from Stann Creek to Belize just to see him in the Hospital where they knelt at his bedside and prayed for his recovery.
He had hoped to inaugurate a five-year plan for Stann Creek with the aim of laying a sound economic foundation for that District.
He developed the idea for a cycling "expedition" to San Ignacio in order to test the cyclists' ability to cope with a then-badly built Western Highway.
Roberts of the Public Hospital Royal Bank of Canada local manager Charles Beattie, Frans Dragten, Reverend Cleghorn, medical officer Lieutenant Colonel James Cran and that of a young surveyor, Henry Fairweather.