We have Austin Pye. Family notes indicate he owned a sawmill on the Chicago River at the location of the current Chicago & Northwestern Railroad Station. They also indicate that his wife, Betsie Shutcher (Betsie Thatcher?) Pye traded it for a berry farm in Michigan. Their daughter, Alice Pye married Silas Thomas Baker, a carpenter in Downers Grove. Their son, Charles Augustus Baker married Leah Jane Hampton. Their daughter was my great-grandmother, Alice Edna Baker Southcombe who lived most of her life in Morris, Grundy Co, IL. Would love to hear from you and how McDonald and Riley (We have some Riley/Reilly connections in Ontario, Canada) fits into the Pye/Thatcher family tree. Barry Jernigan