Newton is a contraction of "New Town", the name of many places in English-speaking countries. Other uses, such as its use as a surname, are directly or indirectly derived from this place name. It may refer to:
Isaac Newton had no middle name
If you meant 'last name,' then it is Newton. Sir is a title - like Mr. and Isaac is his first name.
Newton was knighted in 1705
Sir Isaac Newton
The 'Sir' is from being 'knighted' by the queen (or king) of England.
His name was also Isaac Newton
jessica newton
Isaac Newton
Hannah Newton
"Isaac Newton was Sit Isaac Newton's real name.
He was named after his dad so he is sort of sir isaac newton the second
Sir Isaac Isaacs was born on August 6, 1855, in Melbourne, Australia.