No, sharing the same last name does not necessarily mean that you are related to someone. Surnames can be common and shared by many people who are not related.
call their name and surname together
That really depends upon what your name is.
It's the same name you just say it different
must be someone who has the same last name but is not realted
It means, did your parents choose your first name in honor or in memory of someone else with the same name? Did you parents know someone (or know about someone) with the same name and choose your name for that reason?
sure! the same age, however is a different question.
No that is someone else with the same first name.
It means grandson of, or descendant of. So someone with O'Harkin, is the descendant of someone with the same name.
patient (someone displaying patience / or someone treated at the doctor's) is spelled the same in French.
Madame is the same as Mrs. in Enlish; a name for a married woman. Madmoiselle is the same as miss, someone unmarried.
dictator, it means the same in any language.