New york - how can a father file a paternity order if he does not know child's birth date or legal name?

It will be hard to prevail. Ancestry.com is not considered proof as to paternity. Please speak to counsel.

Mom & Dad rent, Dad cheated on Mom. Mom wants Dad to leave but he refuses...the lease is in moms name only, can she evict him?

She can try. but if he files for divorce she will be out of luck.

My ex wife is taking me to small claim court over a TV she bought my mom as a Christmas gift almost 7 years ago, should I worry?

If you bring your divorce decree and judgement and agreement with you to court, and show them that the divorce just happened the case should be...

Can I legally take paternity test with my child?

Please consult with counsel so you are doing what you are trying to do.

If there is child support being takenand you still live with the child mother,Is it against the law?

If you live with the child, you should file a petition or a motion to stop the support order. It is unclear if you will prevail or not.

Would I be able to get back child support if I never proceeded in court?

Nope, as they say, "You snooze, you lose." You can't get retroactive support.

Do I need insurance as a music act (dj and bands)?

If they say they need insurance, then they need it. If someone trips, they can sue you.

Will it be possible for me and my friends (17) to lease with an 18 year old?

If you are not 18, you can't legally sign a contract.

You really need to hire counsel, and file your petition.

What are the chances of receiving social or NY transit authority benefits from my deceased common law husband of 40 plus years??

NY does not recognize common law marriage. As a result your chances are nill.