IMHO a child of a married couple should have the father's surname and a child born to parents who are not married should have the mother's surname.......cos if he can't or won't marry her then he is not comitted to that relationship so how can he comit to a parent/child relationship.
Had these been genuine, I could now log in as you, have a quick read of your email, add and delete a few contacts and spam everyone you know with porn, all under your names.
You were actually stupid enough to fill in your correct email and password. I could now use those details to check your email, send spam from it and much more.
NEVER FILL IN YOUR DETAILS ON SITES THAT ASK FOR YOUR DETAILS.
I am harmless but this could have easily been a genuine phishing site. I will delete your details from my list but you should change your password if you feel compromised.
I hope you learn from this and NEVER do this again.