I just discovered you're query this past week and feel I can offer some insight as to your family roots in the USA. My mother Eleanor is a first cousin of your father Robert. I believe that would make us third cousins?? Some of the details that I know of are as follows:
You're father had siblings by the name of Lois May, Verna Lee, James, and half-sister Methyl. I have a childhood picture of your father, his brother James with their pet dog, as well as a picture of Verna Lee and Lois May. I can forward the photos to you via e-mail if you like. Please furnish you're e-mail address and I'll do so promptly.
I remember meeting you're grandfather Guy when I was a young boy while visiting relatives in Noble, Illinois. He was a small man in stature.
You're grandfather had siblings named Frank, Eva Mae and twin brothers James Roy and Robert Jefferson. James Roy was my grandfather.
You're great grandparents were William Wallace and Ida Lyons.
First cousins of yours that I'm aware of are:
Your uncle - James Roy (deceased 1980)My grandfather
Eleanor - my mother James Robert (deceased) Roy Eugene (deceased) Howard Guy (deceased) Ethyl Mae (deceased) Harry Pearl (deceased)
Your uncle - Robert Jefferson (deceased 1971)
John (deceased) Joe (deceased) Katherine Ida Mae Jane
I know until recently, an annual family Colborn reunion took place in Noble, Illinois. Usually over the July 4th Holiday. I'm not too sure if this is still going on, as a lot of the family has passed on. You may or may not know this, but Noble, Illinois was founded by the Colborns. A lot of family history is there.
I hope you find this information to be helpful in your quest for family history.