I have two brothers.. neither are married now.. but do have children by prev marriage
Niether brothers hhave any life insurance... my question is WHO WILL BE RESPONSIBLE FOR THEIR FUNERAL EXPENSES... what if their children refuses to pay .will the law hold me responsible? I have no way of paying (or I wld be glad to). Thanks

Their estates will be responsible. If no one claims the bodies or offers to pay, then they will be buried in unmarked graves in "potters field". Or possbily cremated.