Could this have been written down incorrectly?
Sounds to me like you have some more digging to do yet! There is a story in there somewhere.
In recent weeks I have come across a family member, a male, who took on his stepfather's name. There was 12 years between this boy and his other siblings which made me wonder if his mother had been married before. After some digging I found that this young man's father was a violent man and a criminal.
I don't know if his mother ever divorced his father, but for certain is the fact that she remarried and took her son with her. The boy in taking on his stepfather's name obviously wanted to disconnect himself from his real father. The lad eventually married in England and then headed out to the good old US of A and it is only on his passport application that he records his proper name, but he also adds his stepfather's name and records his stepfather as his real father. I guess given his real father's criminal and violent past, it would have made his progress in life difficult and he most certainly wouldn't have been able to emigrate or improve himself.
My reason for telling you all this, is that sometimes what we read on certificates and forms isn't always an error! Of course much research has to be done to uncover the story, not that that is always possible. Our ancestors sometimes leave us with many unanswerable questions. Fortunately for me I was able to resolve my family members reasons for what he did.
Happy hunting. Please tell us what you find out. These are intriguing stories, with a hint of 'smoke and mirrors' added to the mix. Lets face it, one cannot make a 'mistake' when filling in such important documents like marriage and birth certificates, so misinformation is deliberate. My own Grandmother 'falsified' her father's details on her own marriage certificate way back in 1938 as her father had committed suicide in 1924. I guess her mother and or other family members brought pressure to bear on that so as to avoid the stigma associated with a suicide in the family. Certainly a deliberate act.
P