Conjunction
Upon which; in consequence of which; after which.
Source: Webster's dictionaryThe grey road whereupon we trod became as holy ground: The eve was all one voice that breathed its message with no sound: And burning multitudes pour through my heart, too bright, too blind, Too swift and hurried in their flight to leave their tale behind. George William Russell
Because women are marvellous. They stroll perfectly bland and serene through a fact that the men have been bloodying their heads against for years; whereupon you find that the fact not only wasn't important, it wasn't really there. William Faulkner
Like our attitude to love, truth and goodness, we seem to be confident about knowing what beauty is - certain, even dogmatic - until we think hard about the idea, whereupon all confidence flies away. Charles Jencks
A colleague who met me strolling rather aimlessly in the beautiful streets of Copenhagen said to me in a friendly manner, "You look very unhappy”; whereupon I answered fiercely, "How can one look happy when he is thinking about the anomalous Zeeman effect?”. Wolfgang Pauli
About this time the son of the Persian king fell ill, and Manes undertook to cure him; the prince, however, died, whereupon Manes was thrown into prison. Source: Internet
After some minor conversation, Edwards responded to Dahmer's request to turn his head and view his tropical fish, whereupon Dahmer placed a handcuff upon his wrist. Source: Internet