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The [Wikia](http://rwby.wikia.com/wiki/Taiyang_Xiao_Long) says that Taiyang
Xiao Long, Yang's father, first married Summer Rose, Ruby's mother. But why
isn't Ruby's name Ruby Xiao Long? This might mean that Ruby isn't the real
daughter of Taiyang, probably his adopted daughter.


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rwby
Who is Ruby Rose's father?


TaiYang Xiao Long is both Yang & Ruby's father.

Yang's mother is unnamed as of Season 2. Ruby's mother is _Summer Rose_ , who
is Yang's step-mother.

I have two theories as to why Ruby is Ruby Rose not Ruby Xiao Long.

**Theory 1**

Summer Rose was insistent that her name be carried on, and so Ruby was given
the surname Rose. As [Memor-X has said in the
comment](https://anime.stackexchange.com/questions/14685/who-is-ruby-roses-
father/44727#comment19084_14685), a husband taking a wife's surname isn't all
that rare nowadays.

**Theory 2**

It was a convenient choice for the writers - _Ruby_ and _Rose_ are both very
vividly red items, whereas Yang Xiao Long can be translated as _Small Dragon
of the Sunshine_ or _Little Sun-Dragon_ , reflecting Yang's powerful, fiery
personality & battle ability quite well.

Theming the characters with their colour seems to be quite important in _RWBY_
\- For instance, check out their pajamas below - Yang has a fiery heart on her
tank top, whilst Ruby has rose-patterned bottoms.

![the girls with their outfits](https://i.stack.imgur.com/BPbpLl.png)

I suspect we may find out more if/when Yang's mother's identity is revealed.


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It's possible that Neo can be part of Yang's family.

In Volume 2, pay attention to the neck of Neo and the mystery red girl. People
say that the mystery red girl could be Yang's mom. And both the mystery red
girl and Neo has the exact same necklace on.

![the necklace on Neo and the mystery red
girl](https://i.stack.imgur.com/lZgcfl.png)


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I have a theory that Summer Rose is Ruby Roses's mother and Raven (last
name:??) is Yang's mother (obviously!). I believe when Raven went on that
mission so long ago (after she gave birth to Yang, of course), something came
up and caused Raven to stay out on her mission for years to come. That lead
TaiYang to believe that Raven had disappeared or died. Then, he took his old
teammate Summer Rose and married her and got Ruby,

When Summer died, I think he thought he was a lone man raising two children
and his brother (Uncle Qrow) to help, so he didn't want to marry again because
he didn't want his heart to be broken once more. And I don't feel like Neo
would be part of the family. It may be a coincidence that somehow they both
bought the same necklace, but no one knows for sure. Thus, leading up to my
Theory. Again, this is a theory and I may be wrong.


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In later seasons, it is stated that Raven Branwen, Qrow's twin sister, is
Yang's mother.

Still, it's the top result when you ask Google about Ruby's lineage.


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I'm thinking maybe last names aren't that important in Remnant. Like it
doesn't matter if the child takes the mother's last name, if the wife doesn't
change hers, or if the husband takes the wife's name.

Weiss's father took her mother's last name, so they might not follow the same
traditions we do. Or perhaps the last name Rose has special significance, so
they decided to pass it down to Ruby.

Since _RWBY_ is meant to be (mostly) family friendly, I'm not sure why the
writers would include characters having premarital sex so openly. I know
Rooster Teeth has made the show a little dark and more mature recently, but
with the exception of a couple innuendos here and there, they've stayed away
from the topic of sex.


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I think Qrow is Ruby's father.

Maybe he doesn't want Ruby to know because he is on a dangerous mission, and
if Ruby know, she will obviously go. Maybe Qrow left Ruby for that reason and
therefore, Qrow is probably Ruby's father.


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Ruby Rose is Qrow's (crow, Raven's brother Ruby's aka uncle...) and Summer
Rose's daughter.

She was adopted by Taiyang Xiao Long because of his semblance to bad luck,
which causes bad luck to people he cares about but also bad luck to people he
faces in battle, making him the ultimate undercover agent.


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The Qrow being Ruby's dad has been debunked by RT. And besides, it'd be an
unnecessary plot twist.

They confirmed that Tai and Summer had Ruby. Qrow was just her teacher and
mentor.

Even though RWBY takes place in a fictional world called Remnant, it's
basically a more awesome Earth, with the same calendar type, and possibly the
same legal systems as Earth. It's possible that if it follows domestic laws,
that the parents may choose the last name for their child, and the wife
doesn't have to take the husband's name after marriage. It's possible that
they loved the name 'Rose' for their daughter Ruby, due to it sounding a bit
better than 'Ruby Xiao Long' (and Yang Xiao Long translates to 'Sunny Little
Dragon', and 'Ruby' doesn't fit the chinese theme, lol).


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I don't have a direct source, but Miles and Monty stated that the "Qrowdaddy"
theory is false. First time was in an RTX panel (forgot the date, but it was
before Monty passed, because Monty said so himself that Qrow isn't the
father), and second I know was in a Reddit post by Miles.

As for the domestic laws in real life (at least in America where I live), even
though it's the norm, the wife after marriage doesn't have to take the
husband's name. They can keep their names, and in some cases the husband may
take the wife's name, but those are somewhat rare.

And for the child's last name, they can choose whether they want the child's
surname to be the husband's or the wife's. So, if the countries of Remnant
have the same laws and policies as our world, my speculation is that Tai and
Summer may have named her 'Rose' because of this, as well as 'Rose'
complimenting the name 'Ruby' quite well (Just a theory on that one). And as
I've stated before, 'Ruby' doesn't really fit the Xiao Long name.

I learned these laws from my history teacher, who used to go to law school (he
could be a lawyer, but instead he chose to be a teacher. lol)


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