On the accession to power of Sir Samuel Griffith in August 1890, Unmack became Postmaster-General.
Samuel Beckett | Samuel Taylor Coleridge | Samuel Johnson | Samuel Pepys | Samuel L. Jackson | The Andy Griffith Show | Griffith University | Nanci Griffith | Samuel R. Delany | Samuel Barber | Melanie Griffith | Andy Griffith | Samuel Goldwyn | Samuel | D. W. Griffith | Samuel Alito | Samuel Butler | Samuel Ramey | Samuel Morse | Samuel Gompers | Samuel de Champlain | Queensland Conservatorium Griffith University | Charles B. Griffith | Samuel Sewall | Bill Griffith | Samuel Richardson | Samuel Hill | Samuel Fuller | Arthur Griffith | Samuel Purchas |
Other chairmen over time was noted Queenslander's such as Samuel Griffith, John Douglas (Queensland politician) and James Brunton Stephens, William Senior (journalist) the Principal Short Hand Writer also known as 'Red Spinner' (the latter three, in particular, were known to be close friends of Feilberg).
Griffith is named after Sir Samuel Griffith, who was chosen in 1903 as the first Chief Justice of the High Court of Australia and retained his position until retirement in 1919.