It's important that both partner change their surnames to truely incooperated the 1+1 becomes 1.
What does this truely imply
It means let me use my spouse and I for example
Tochukwu Adam Jesus Dum Udoye and I Adaobi Lilian cecelia Udoye Dum.
You can address my spouse or I in our individual role identity as Tochukwu Adam Jesus Dum and Adaobi Lilian cecelia Udoye when dealing with us individually as we have our individual account number
but as a couple,family or family account the two last names must reflect with the wife as signatory should divorce issue arise wife keeps the children and fund for the family for the children.This unity indicates the two bloodline that united in catholic royal marriage for true peace.
This is exactly the implication of 1+1=1
My family acquired a son in the divine law while his family acquire a daughter in the divine law.
When their children want to take up a surname they bear Dum and Udoye for example my son Abel love dum udoye
And this will remain the standard of all the family and marriage after us in the catholic church in divine law ten commandement law that rules the catholic church henceforth.