Thank you Ian for the photo. There are still members of my family in this generation who look like William Buchanan (minus the beard), your dear Elizabeth and little Matilda May.
In relation to Elizabeth Buchanan who is Jane, William and James' sister (and possibly an elusive Robert's sister), I have the following information for the family of the Elizabeth Brown (nee Buchanan) in Mingo Junction, Jefferson County who may be our Elizabeth Buchanan in America.
The American Elizabeth Brown's (nee Buchanan) son Robert J. Brown is buried in the Oakland Cemetery, Steubenville, Ohio. His date of birth is given as 14 February 1854, Pennsylvania. His date of death is given as 14 March 1941. His widow Isabella's date of death is 11 September 1964 and she is also buried in the Oakland's Cemetery. I have her birth as 1871 in Wheeling, West Virginia, and her maiden name is listed on records as either Burchett or Burkett. IN 1940 they were living at Ward 3 in Mingo Junction, whatever that means.
This Robert and Isabella Brown's son James M. Brown is listed as being born on either 30 October 1888 (burial record) or 27 October 1888 (US Census) at Mingo Junction, Jefferson County. He died on 22 June 1938 at Proviso, Cook County, Illinois and was buried at the Oaklands Cemetery, Steubenville. His occupation, Stationary Engineer. He lists his father Robert Brown (US Census) as born in New Jersey. His wife was a Ruth Brown. He served in the US Navy in WW1.
Steubenville has a very strong Genealogy Centre. Many people have left the area. The population is roughly around 16 to 19,000 at the moment. Unfortunately, I am not on the Irish records at the moment. I only had access to them for one month. Have to research elsewhere. May subscribe to the Irish records later.