I have records that show that your William Cosand married Eliza J. White on 24 January 1850 at the Newberry Meeting House, Orange County, Indiana.
William as born 5 November 1825 in Washington County, Indiana, the son of Benjamin and Penninah (Pritchard) Cosand.
William Gurney Cosand, son of Willaim and Eliza Jane (White) Cosand was born 10 January 1864 in Howard County, Indiana.
This information is recorded in the Hinshaw and Willard Hiess Quaker books.