How can I find a person's last name?

Ok so I met this girl on vacation and I couldn't get her number in time. I want to find her last name so I can find her on twitter r whatever. I know what city she lives in and know her first name. I know her age and know her sister got married on Wednesday...

i wanted to try to find my ex boyfriends email or yahoo name or any other messanger he may have. can anyone help me with how to find him? i looked up his name and it keeps bring me to some page that i have to pay money to c all the different results...

Okay, so I really want to know this persons cell phone number, but i was to afraid to ask them so... I can't find out how to find their number just by knowing their first name!! HELP!!

I've been chatting with someone for a while now and their email address and IM name is nothing like their actual name.. and I saved his real name once in my cell phone that was recently stolen. So i've gone back through emails to try and see if he or...

I have an address, but no name. How can I use the address to find out who lives there? I would like to know who lives at this address, and not sure how to find out.

can i find other persons adress, phone and surname when i only know his first name and his email adress?

can i find other persons adress, phone and surname when i only know his first name and his email adress?

I checked on Secretary of State but you have to enter the company name and tells you who the owner is but how can I search by owners name, not company name? Please help.

I need to be able to find someones email address or webpage by searchimg them by first and last name...