Anybody find a Helpful way of bypassing Activation Lock without original user ????

I gave my old ipad 2nd gen. to grandson. I bought it secondhand, and had no idea about this Activation Lock thing. I cannot locate receipt to prove purchase. I havent got any information about previous user, but I understood that the ipad was Old New Stock, and hadnt been used before. Well now I know how that has worked out for me. Please someone surely has a surefire way to bypass this Brick. Thanks in advance.