Sr., Jr. etc. after a name are suffixes, not part of the legal name unless it was on their birth certificate or they legally changed their name to include it. Simply so, is SR a legal name?
Rule #1: Parent & Child with Same Name = Sr. + Jr. Any parent and child with the exact same legal name can be referred to as “(Name), Sr.” and “(Name), Jr.” Below, Barnabas Ludwig Johnson named his son Barnabas Ludwig Johnson also, so they can be called Barnabas Ludwig Johnson, Sr., and Barnabas Ludwig Johnson, Jr.
Similarly, is JR Part of last name or first name? "John Doe Jr." means he is John, the son of John. In a full name listing, the suffix follows the last name because the person is primarily known by is given name and surname, the suffix being a secondary piece of information.
Just so, is JR a legal name?
It's the fact that unlike 'Sr. ' and various prefixes such as 'Mr. ' and 'Mrs.,' the suffixes 'Jr. ' and 'III' are actually part of a person's official, legal name.
Do you legally have to change your name to SR When you have a child named JR?
A man with the same name as his father uses “Jr.” after his name as long as his father is alive. His father may use the suffix “Sr.” for “senior.” The son may either drop the suffix after his father's death or, if he prefers, retain it so that he won't be confused with his late father.
Related Question Answers
How do you write Sr in a name?
To abbreviate name suffixes such as “junior” and “senior,” the first and last letters -- “j” and “r” for “junior” and “s” and “r” for senior -- are written followed by a period. This abbreviation is used when a person's given name is written in full such as John H. Smith Jr. What does SR mean after a name?
Sr. is a written abbreviation for Senior, and is written after a man's name. It is used in order to distinguish a man from his son when they both have the same name. Are you still a JR If the Sr died?
The only person who is supposed to be called, "Junior" is the son of someone with the exact same name. Once his father dies, he is no longer a "Junior". If the former, "Junior" does have a son of the same name he beomes "Senior" and his son moves up from "III" to "Junior". What is JR SR III called?
When a man is named after his father who is a “Jr.,” he is called “the third,” once written with either the numeric 3rd or the Roman numeral III, but now the latter is used almost exclusively. A man named after his grandfather, uncle, or cousin uses the suffix II, “the second.” How do you write Sr after a name?
To abbreviate name suffixes such as “junior” and “senior,” the first and last letters -- “j” and “r” for “junior” and “s” and “r” for senior -- are written followed by a period. This abbreviation is used when a person's given name is written in full such as John H. Smith Jr. What is the female version of Junior?
'Junior' is actually genderless, and simply means 'younger'. It's not common to use for females, but it can (and has been) used on occasion. Should you name your son after his father?
So the peace of mind that comes from having a family name can increase your chances of birthing the next Bill Gates III or Tom Cruise IV. 2. A 1980 study showed that sons named after their dad had fewer behavioral problems, which makes sense because a kid is constantly aware that he is carrying that name. Why do fathers name their sons after themselves?
First, a little backstory: The tradition of giving a child the name of his parent—technically known as a “patronym”—goes back several centuries, when a child (usually a first son) was named after a parent (usually a dad) as a symbol of familial fealty. Where does Jr go in a name?
Doe, John, Jr. (Also please note that the gentleman's official name will have a comma in it: John Doe, Junior or John Doe, Jr. .) The suffix is an explanation of the first name, not the last. "John Doe Jr." means he is John, the son of John. Do you put JR on a birth certificate?
Suffixes such as Jr. or III are a part of a person's legal name if they are stated on the person's birth certificate. My grandfather is the original, my father is the junior, my brother is the III, and my nephew is the IV, and that's their legal names on their birth certificates. Where do you put JR in a name?
In writing, a comma is used to separate the surname and the suffixes Jr. and Sr., though the trend is now toward dropping the comma. Junior, when spelled out, is written with a lower case j. The wife a man who uses a suffix, uses the same suffix after her name: Mrs. Can you be a Jr with a different middle name?
From Behind the Name: "Junior is used to distinguish a son with the same name as his father. The Junior must be a son of the father, not a grandson. The names must be exactly the same, including the middle name. The father must still be living. Can you add Jr to your name?
Jr. or II can be used when being named after the father, however they are both pronounced differently; Jr. is pronounced as junior and II is pronounced as the second. Roman numeral suffixes can be used to name after other family members like an uncle, cousin, or ancestor (including grandfather). Where do you put JR when last name is first with middle name?
Smith Jr. When used in this context, the abbreviation is capitalized and a period follows it. If the name is written last name first, it should follow this pattern: Last Name, First Name Middle Initial., Suffix. For example, “Williams, Mark A., III.” Is Junior only for males?
It's not common to use for females, but it can (and has been) used on occasion. There are a few arguments for why this is, but one is that historically greater significance has been placed on male heirs and the male family line, leading to 'junior' often being used for boys and men. How do you write last name with JR first?
To abbreviate name suffixes such as “junior” and “senior,” the first and last letters -- “j” and “r” for “junior” and “s” and “r” for senior -- are written followed by a period. This abbreviation is used when a person's given name is written in full such as John H. Smith Jr. Is JR a suffix name?
In the United States the most common name suffixes are senior and junior, which are written with a capital first letter (Sr. and Jr.) with or without an interceding comma. What does JR stand for?
Junior
How do you write a name with JR last name first?
To abbreviate name suffixes such as “junior” and “senior,” the first and last letters -- “j” and “r” for “junior” and “s” and “r” for senior -- are written followed by a period. This abbreviation is used when a person's given name is written in full such as John H. Smith Jr. Can a female be a Jr?
The term "junior" is correctly used only if a child is given exactly the same name as his or her parent The title "Jr." is sometimes used in legal documents, particularly those pertaining to wills and estates, to distinguish among female family members of the same name. Is JR a name suffix?
Jr. or II can be used when being named after the father, however they are both pronounced differently; Jr. is pronounced as junior and II is pronounced as the second. Roman numeral suffixes can be used to name after other family members like an uncle, cousin, or ancestor (including grandfather). Can a girl be a Jr after her father?
Although there are instances of daughters who are named after their mothers and thus use the suffix "Jr." (such as Winifred Sackville Stoner, Jr., Anna Eleanor Roosevelt, Jr., and Carolina Herrera, Jr.) or after their grandmothers with the suffix "II", this is not common. How do Jr and Sr names work?
A man with the same name as his father uses “Jr.” after his name as long as his father is alive. His father may use the suffix “Sr.” for “senior.” The son may either drop the suffix after his father's death or, if he prefers, retain it so that he won't be confused with his late father. Is it OK to name your second son JR?
Unequivocably, yes -- to the question of whether a junior can be the second, third, or fourth son. The "junior" in the family is whichever boy is given the same name as his father. Although it is commonly the firstborn son, it is not always the first, and it is just as valid if it is the tenth son. Can father and son have same name?
You undoubtedly already know it. Any parent and child with the exact same legal name can be referred to as “(Name), Sr.” and “(Name), Jr.” Below, Barnabas Ludwig Johnson named his son Barnabas Ludwig Johnson also, so they can be called Barnabas Ludwig Johnson, Sr., and Barnabas Ludwig Johnson, Jr. What is the order of SR Jr III?
suffixes after their name, to designate the order in which they were born. If a parent and child are using the suffixes “Sr.” and “Jr.”, but the parent dies, then they are referred to merely as “(Name) I” / “(Name), the first” and “(Name) II” / “(Name), the second”. Do you have to have the same middle name to be a second?
In order to use II, the names must be identical, including the middle name. Both are used to identify that the person is the second in the family to have the name. Jr is used when the son has the same name as the father. The second (II) is used when the elder family member is anyone other than the father. 
