Isaac Newton hated his stepfather very much.
the newton.. like the weight of something
a type of weight called a newton
Sir Isaac Newton suffered from epilepsy.
No: Isaac Newton's full name was just Isaac Newton.
if you actually mean "for isaac newton" he had algebra, algorithyms, the decimal system.. possibly trig if you mean "by isaac newton" he pretty much invented calculus.
Isaac Newton's parents were Hannah Ayscough and Isaac Newton Senior.