The William Robinson you link above died at age 16 in the Civil War. The profile lists his death date as 1865 with no sources.
There is mention of him on Ancestry, showing death in the Civil War in 1865 - again with no sources.
My guess is that he was not married to anyone in 1867.
I think you will find that William Robinson is a very common name and it may take a lot of digging to find the one you seek.
