 Several were doughty fighters for Presbyterianism, notably John Howison, while others, such as Patrick Hamilton gave much of their time to (sometimes provocative, not to say scurrilous) poetry.William M'Culloch organised great preaching festivals on the hillsides near his Kirk, inviting one of the founders of Methodism, George Whitefield to preach to upwards of 20,000 people.This "Cambuslang Wark" was part of an extraordinary series of revivalist movements which swept Scotland, England and New England in the 1740s.