ashton — Catherine. Baroness. born 1956, British Labour politician; High Representative of the Union for Foreign Affairs and Security Policy for the European Union (2009–2014)
aspen — An aspen is a tall tree with leaves that move a lot in the wind.
aston — Francis William. 1877–1945, English physicist and chemist, who developed the first mass spectrograph, using it to investigate the isotopic structures of elements: Nobel prize for chemistry 1922
bastion — If a system or organization is described as a bastion of a particular way of life, it is seen as being important and effective in defending that way of life. Bastion can be used both when you think that this way of life should be ended and when you think it should be defended.
Three-syllable rhymes
alaskan — of or relating to Alaska or its inhabitants
quaking aspen — any of various poplars, as Populus tremula, of Europe, and P. tremuloides (quaking aspen) or P. alba (white aspen) of America, having soft wood and alternate ovate leaves that tremble in the slightest breeze.