Demographics of Pennsylvania Colony

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Germans – Thousands of Germans were also attracted to the colony and, by the time of the Revolution, comprised a third of the population.

Scotch-Irish – They [...] numbered about one-fourth of the population by 1776.

These are estimates, of course, but it leaves only about 42% of the population to be divided among the remaining groups: English, Native Americans, Africans, and "others." The English cannot have been a majority.