Windsor Township was originally a part of Hellam Township, which was the original township of York County laid out by authority of the Provincial court at Lancaster in 1739. Windsor remained a part of Hellam Township until 1753 when a petition was presented to the court at York, signed by John Wright, Jr. asking that “Hallam Township be divided by a line on Stony Ridge, running across the valley to the next ridge of hills on the south side of Grist (Kreutz) Creek Valley, and also eastward along the last named ridge to the river Susquehanna.” This new township, York, included the current townships of Windsor, Lower Windsor, York and a portion of Spring Garden. Five years later, Windsor Township (which included Lower Windsor Township) formed out of York Township.