Yerkes has also been spelled Gerkes, Gerckes, Jerghes, Jerghjes, Jurckes,Yercas, Yercks, Yerkhas, Yerkas, Yerkiss, Yerks, and Yerkus
Indiana became a state in 1819. The north was settled by people from New England and New York, the center by people from the Mid-Atlantic states and Ohio, and the south by people from Southern states, particularly Kentucky and Tennessee.
In 1860 he was living with his brother Henry in Camden, Indiana. In 1870 he was living with his sister Rebecca and the Lenon family in Deer Creek, Indiana. In 1880 he was living in Washington Township, Carroll County with a nephew F. William Mills.
Berkeley County, Virginia was created from the northern third of Frederick County, Virginia in 1772. Jefferson County was formed from the county's eastern section. In 1863 Berkeley County became part of the new state of West Virginia.