Breaking News
The Engineering Life - Around the Web

Are you my third cousin twice removed?

NO RATINGS
View Comments: Threaded | Newest First | Oldest First
Duane Benson
User Rank
Blogger
re: Are you my third cousin twice removed?
Duane Benson   3/18/2013 3:19:56 PM
NO RATINGS
The long-lost cousin's daughter would be a first cousin once removed and her kids would be a first cousin twice removed. This is actually pretty timely as I've been looking up some long-not-seen cousin and have been contemplating the same question. Without the simple grandparent rule, I had to wonder what the order of operations would be. Since my kids are first cousins once removed from my first cousin, whose kids are my first cousin's cousins once removed, are they first cousins twice removed [cousin(removed + removed)] or second cousins once removed [(cousin + cousin)removed] or second cousins twice removed (cousin + cousin)(removed + removed) The grandparent rule makes it all a lot easier.

ChrisJ555
User Rank
Rookie
re: Are you my third cousin twice removed?
ChrisJ555   3/18/2013 4:06:37 PM
NO RATINGS
So the answer didn't say explicitly, but I assume that the "x times removed" is commutative? In other words, I am the first cousin once removed of my mom's cousin....so she is my first cousin once removed also, right?

Max The Magnificent
User Rank
Blogger
re: Are you my third cousin twice removed?
Max The Magnificent   3/19/2013 8:44:05 AM
NO RATINGS
Hmmm -- it would seem that it must be commutative -- but that can make it a bit "lop-sided". So if you are the first cousin to some one, and they have a kid and that kid has a kid, then the kid's kid is your first cousin twice removed. But similarly, you are that kid's kid's first cousin twice removed. My head hurts...

Barton.Meeks
User Rank
Rookie
re: Are you my third cousin twice removed?
Barton.Meeks   3/19/2013 3:32:35 PM
NO RATINGS
The Xth cousin part is how many generations you have to go back to find a common ancestor. The Yth removed part is how many "levels" you are off. Example: Chip is my 1st cousin once removed. His mother and I are first cousins, we have a common grandparent. Chip and I are "once removed" because it is two levels back to the common ancestor for me, but three levels back for him. Look up cousin on wikipedia -- they have pictures!

Barton.Meeks
User Rank
Rookie
re: Are you my third cousin twice removed?
Barton.Meeks   3/19/2013 3:48:12 PM
NO RATINGS
Correction for Xth cousin: number of generations back minus one. For 2nd cousins, you go back 3 generations to find the common ancestor, a great-grandparent.

adkozin
User Rank
Rookie
re: Are you my third cousin twice removed?
adkozin   3/19/2013 3:54:58 PM
NO RATINGS
Try reading Heinlien's "All You Zombies" Makes Ray Stevens simple by comparason.

Steam Kid
User Rank
Rookie
re: Are you my third cousin twice removed?
Steam Kid   3/19/2013 3:59:17 PM
NO RATINGS
Not as difficult as you are making it sound. If you have a common ancestor Z with children X & Y producing a generational column of ancestors then the children of X & Y are cousins. I imagine no-one has problems understanding this. To illustrate it graphically, imagine a three column strip with the first column labelled as n, second column as X ancestral line & the third column as Y ancestral line. Thus label Z as n=-1, X & Y as n=0, then the (first)cousins are n=+1. For each generation down n increments and you have the n th cousin of X & Y. When you stop going down the X column but continue down the Y column r times then you have the n th cousin r times removed. When they talk about each other X would say "Y is my n th cousin r times removed". Y would say "I am n th cousin r times removed to X". thus no ambiguity.

Max The Magnificent
User Rank
Blogger
re: Are you my third cousin twice removed?
Max The Magnificent   3/20/2013 8:06:38 AM
NO RATINGS
You make is sound so simple, especially if you say it quickly :-) But seriously, I do like your suggestion: When they talk about each other X would say "Y is my n th cousin r times removed". Y would say "I am n th cousin r times removed to X".

Duane Benson
User Rank
Blogger
re: Are you my third cousin twice removed?
Duane Benson   4/18/2013 10:25:44 PM
NO RATINGS
It would be cool to be a mathematician so you could name your kids X, Y and Z.

seaEE
User Rank
CEO
re: Are you my third cousin twice removed?
seaEE   4/19/2013 3:49:32 AM
NO RATINGS
Great idea, and if one were a set of twins, the second could be x-squared. Triplets? x-cubed... "That is X**3, and over there is X**2, and that one is X. They are my power series!"

Max The Magnificent
User Rank
Blogger
re: Are you my third cousin twice removed?
Max The Magnificent   5/10/2013 2:54:46 PM
NO RATINGS
Groan :-)

rpell2
User Rank
Rookie
re: Are you my third cousin twice removed?
rpell2   3/20/2013 1:29:09 PM
NO RATINGS
Wikipedia has a cousin relationship chart that I've found useful: http://en.wikipedia.org/wiki/Cousin#Cousin_chart

Max The Magnificent
User Rank
Blogger
re: Are you my third cousin twice removed?
Max The Magnificent   5/10/2013 2:55:02 PM
NO RATINGS
I have to say that I LOVE the Wikipedia

alunh_1
User Rank
Rookie
re: Are you my third cousin twice removed?
alunh_1   3/22/2013 12:43:35 PM
NO RATINGS
If you want a complete and detailed explaination try: http://www.genetic-genealogy.co.uk/ My father-inlaw is something of an expert in these things.

Max The Magnificent
User Rank
Blogger
re: Are you my third cousin twice removed?
Max The Magnificent   5/10/2013 2:55:42 PM
NO RATINGS
## My father-inlaw is something of an expert in these things Remind me NOT to get into a conversation with him at a party :-)

amacon
User Rank
Rookie
re: Are you my third cousin twice removed?
amacon   3/22/2013 6:08:34 PM
NO RATINGS
Years ago, I wrote a program that my family reunion use a computer to identify their relationship to other people at a reunion. One of the things I realized that made this program much simpler was that one's siblings were one's 0th cousins.

Max The Magnificent
User Rank
Blogger
re: Are you my third cousin twice removed?
Max The Magnificent   5/10/2013 2:56:04 PM
NO RATINGS
I wonder if there's an app for that on the iPad?

JeffM
User Rank
Rookie
re: Are you my third cousin twice removed?
JeffM   3/22/2013 9:51:36 PM
NO RATINGS
One of my daughters married her fourth cousin. So, her children are not only her children, but her fourth cousins, once removed. My son-in-law's father is my third cousin, so these three (soon to be four) grandchildren through my daughter are also my third cousins twice removed through my son-in-law. I find that kind of fun!

Max The Magnificent
User Rank
Blogger
re: Are you my third cousin twice removed?
Max The Magnificent   3/25/2013 8:19:02 PM
NO RATINGS
Now my head really hurts :-)

anrang
User Rank
Rookie
re: Are you my third cousin twice removed?
anrang   4/6/2013 3:01:16 AM
NO RATINGS
If you want a complete and detailed explaination try:http://blisswedding.com.hk/facebook.php

Max The Magnificent
User Rank
Blogger
re: Are you my third cousin twice removed?
Max The Magnificent   5/10/2013 2:56:26 PM
NO RATINGS
Cool Beans -- thanks for sharing

Flash Poll
Radio
LATEST ARCHIVED BROADCAST
Join our online Radio Show on Friday 11th July starting at 2:00pm Eastern, when EETimes editor of all things fun and interesting, Max Maxfield, and embedded systems expert, Jack Ganssle, will debate as to just what is, and is not, and embedded system.
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Times on Twitter
EE Times Twitter Feed
Top Comments of the Week