I have a lot of information on your Boyd line going back to our first immigrant, John Boyd of Ireland. His son James, had a son name Robert who is the father of Robert D. Boyd. Robert D's mother was Martha Robinson. Robert was born in 1879 and was a year old in the 1880 census.
Robert's brother was Jesse William Boyd, my grandfather. He was born in 1881 so you won't find him in the Census. Other email replies refer to Jesse as the the brother of Robert in Robert's orbituary. At that time Jesse was living in Miami, FL.
I have a lot of information on this line. I am trying to put it on my web page (still under construction). You can find it at: http://home.earthlink.net/~boydralp/
currently it won't work properly so just keep trying until I fix it. If you want to contact me directly, I will glad to help you. I too am looking for data on this line and would like to correspond. I have been searching this family alone for nearly 20 years and this is the first time I have found some of my cousins. Let's keep in touch and share what we have on this family.