Final answer:
The two men referred to in Professor Robinson's lecture on eighteenth-century architecture are likely portrait painters John Smybert and William Berczy, who started an art school, and Inigo Jones, who introduced Palladian architecture in England.
Step-by-step explanation:
According to Professor Robinson's lecture on eighteenth-century architecture, the two men mentioned might be John Smybert and William Berczy, who were prominent portrait painters and established an art school in the New World. Another key figure in the field of architecture from that period is Inigo Jones, who is celebrated for bringing Palladian architecture to England. Significant architects associated with the Chicago School, such as Henry Hobson Richardson and Louis Sullivan, also contributed to the architectural scene, alongside Frank Lloyd Wright who developed his Prairie Style. Moreover, the reference to other architects and artists like Mies van der Rohe and Frank Lloyd Wright indicates their importance in architectural history.