Pine Grove Ranch was originally settled by Anton and Mary Sinkovich in 1904. Anton and Mary Milovic Sinkovich came to Colorado from Slovenia via Cleveland, Ohio. Anton worked in the coal mines around Aguilar and Walsenburg, Colorado as many of the immigrants from Europe did in the early days of Southern Colorado. Anton and Mary would have 8 children, many would also go on to work the coal mines in Colorado and Northern New Mexico. The ranch would be home and a place to make extra money from raising cattle to sell and provide food for the family. Another great benefit to living on land with lots of trees was selling timber to the local coal mines for supports in the mines. This also provided added extra income for the family. This ranch would go on to provide great times and hard work for many generations and supply a beautiful backdrop of the historic rugged Spanish Peaks.