In a family, who is a second cousin? Who is a third cousin?

Question

For instance, my mother's cousin's daughter. Is she my third cousin?

Answer 1

i call them my second cousin

and their mom would be my second cousin once removed

my third cosin is someone who has the same great great grandparents as me

Answer 2

If the cousin is your mother's first cousin, the daughter is your second cousin.

If the cousin is your mother's second cousin, the daughter is your third cousin.

If you are in the same generation, you just add 1 to the degree.

Children of 1st cousins are 2nd cousins.

Children of 2nd cousins are 3rd cousins.

Children of 3rd cousins are 4th cousins.

and so on.

Removed is when you are not in the same generation. You keep the degree and add one "removed" for every generation.

Your dad or mom's 1st cousin is your 1st cousin once removed.

Your grandparents' 1st cousins are your 1st cousins twice removed.

Your great grandparents' 1st cousin is your 1st cousin three times removed.

And so on - if the cousin is a 2nd, 3rd, 4th - or a 12th, for that matter - again, you keep the degree and add removeds.

Removeds go "down" family trees too. If your 1st cousin has a child (grandchild), those children will be your 1st cousins once and twice removed.

Answer 3

Your mom's cousin is her first cousin and your first cousin once removed.

The cousin's daughter is your second cousin.

When both you and the daughter of children, they will be third cousins.

The way that it works is that you start with the common grandparents, then lay every generation out in a ladder coming off from them. The first generation are siblings. The next generation are first cousins. The 3rd generation = 2nd cousins. The 4th generation = 3rd cousins. The numbering is off one because of the siblings being in there. So if you share 10 generations with someone back to a common grandparent, that makes you 9th cousins.

The "once removed" and "twice removed" come sprouts off that ladder, like your mom's cousins daughter or granddaughter. Your mom and the daughter aren't in the same generation. So you count out to the actual cousin (first cousin in this case) and then count down how many generations (daughter = once removed, granddaughter=twice removed).  

Answer 4

second cousin would be your mother's cousin

your third cousin would be your mother's cousin's daughter

Answer 5

Your mother's cousin is your first cousin once removed.

Your mother's cousin's daughter is your second cousin.

Answer 6

1st, 2nd, 3rd, etc. cousins:

It's as easy as grandparents.  1st cousins have the same grandparents.  2nd cousins have the same great-grandparents.  3rd cousins have the same great-great grandparents.

Once removed, twice removed, etc...

This is about a generational difference.

If your grandparents are your cousins great-grandparents then there is 1 generation removed as cousins; you are cousins once removed.  If your grandparents are your cousin's great-great grandparents then you are cousins twice removed.

You mom and her cousin share the same grandparents.  That's your great-grandparents.  It's also your mom's cousin's daughter's great-grandparents.  That makes the two of you second cousins (with no generations removed).  That same cousin's daughter is your mom's first cousin, once removed.

Answer 7

yes she is

Answer 8

yes she would be your third cousin

your cousins are your first cousins

their kids or your mothers cousins are your second cousins

your cousins childrens children or your mothers cousins children are your third cousins

and so on

Answer 9

A cousin in kinship terminology is a relative with whom one shares a common ancestor.  The easiest way to work out your cousin relationship is to establish your common ancestor, then consult a table of consanguinity.  But, briefly you can use the following rules:

If you share grandparents but have different parents you are first cousins

If you share great grandparents but have different grandparents you are second cousins

If you share great-great grandparents but have different great grandparents you are third cousins

If you share great-great-great-grandparents but have different great-great-grandparents you are fourth cousins

If you share great-great-great-great-grandparents but have different great-great-great-grandparents you are fifth cousins

In your case, your common ancestor is your great-great grandparents. As you share great-great grandparents but have different great grandparents you are third cousins.

Answer 10

take it from the top...

siblings share PARENTS

1ST cousins share GRANDPARENTS

2nd cousins share GR GRANDPARENTS

3rd cousins share GR GR GRANDPARENTS

Your mother's cousin (if she is a first cousin) ... her daughter AND you would be 2nd cousins.  Your child and a child of the daughter above will be 3rd cousins.  

If someone's grandfather  is YOUR gr grandfather, then you are of different generations and get into "removed".  

Once you get further than that.. you really can use a genealogy program. Or you take the easy way out... persons who are really cousins but obviously elder to you can be "uncles/aunts", while those of your own approx age can be cousins, ignoring all the 3rds, 4ths and 5ths.  Much less stress when you have family reunions.