I'm not a DRAY researcher but have a 1915 History of Harrison County, Iowa, which states on page 397: THOMAS DRAY became a resident of this county in 1871, first locating in St. Johns township in section 6. He was a native of Ohio and settled in Cincinnati township in 1891, in section 36. And on page 917 is a complete biography for SAMUEL DRAY, son of THOMAS and MARY (HAMILTON) DRAY, natives of Ohio. Samuel was born Sept 28, 1864, in Hancock County, Ohio. The family came to the county in 1871. I hope this helps someone. If you want the bio, please contact me; no charge; it's free.