How to Calculate Family Relationships: Cousin Chart (part 2)

In yesterday’s Part 1 article, we discussed how a cousin chart can be invaluable to your genealogical research. Also known as a table of consanguinity, a cousin chart provides a visual representation of your relationship with your cousins. It can help you track down how you are connected to other individuals with common ancestors.

Click here to download your free cousin chart. (This download will be a .pdf document that you can enlarge to make it easier to read and use.)

In today’s article we will explore such concepts as Parallel vs. Cross Cousins, and Double First Cousins. We will also discuss practical benefits of knowing your cousin connections.

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Parallel vs. Cross Cousins

Other than first, second, and third cousins, cousins can further be divided into two distinct categories: parallel cousins and cross cousins. The former refers to cousins who have descended from the same-sex siblings of your parents, i.e., the children of your father’s brother or your mother’s sister. Cross cousins are those cousins whose parents are the siblings of your parents but of the opposite sex, meaning children of your father’s sister or your mother’s brother.

Double First Cousins

We all have grandparents from our mother’s and father’s sides who are different from one another. A unique scenario occurs when individuals share both sets of grandparents which gives them a peculiar genetic makeup. To make this clear, assume your mother and her sister married two brothers, which effectively means that your aunt’s kid would be your double first cousin. While cousins generally share DNA from one set of grandparents, in this case the cousins share DNA from grandparents from both the maternal and paternal sides.

Practical Benefits of Knowing Your Cousin Connections

Understanding how you are related to your cousins isn’t merely about assigning a label to your relationship. Its implications extend to various domains such as research into ancestral history and medical history, as well as legal matters.

(1) Genealogical Research

Accurately identifying cousin relationships lies at the heart of genealogy, the study of your lineage from ancestors to descendants. This information can be used to unravel your ancestral history, including constructing family trees with precision and decoding your lineage. With all this information available, you can accurately locate your cousins on a cousin chart and determine how they are related to you.

Keeping track of your cousins can be of great help if you are interested in researching your family history or your origins. This will foster a greater awareness of your identity as well as a sense of belonging to a wider family, thus helping you recognize where you stand in a broader family narrative.

(2) Medical History

The biggest application of cousin relationships is in the medical arena, where it helps to assess health risks due to shared genetic structure. Marriages between cousins are quite common, even among first cousins, which can make genetic disorders all the more likely in offspring.

Several genetic diseases, such as cystic fibrosis, thalassemia, and Tay-Sachs disease, happen because both parents were found to be carriers for a genetic mutation, as compared to unrelated individuals. Knowing about these familial connections proves highly beneficial in genetic counseling and can help couples make well-informed decisions about marriage and having children.

(3) Inheritance and Succession

Family relationships are important in inheritance law to accurately determine who will inherit what, and what portion of the estate. There are specific statutes governing intestate succession which vary from one jurisdiction to another. Ultimately, it comes down to determining the degree of consanguinity, or closeness, so that the rightful heirs can be determined and the estates distributed as per law.

Expanding Your Family Tree Search

One way to map out all your possible cousins is through a family tree. Like a living tree, a family tree branches out showing how different members of the family are connected to one another. A basic family tree consists of you, your parents, brothers and sisters, and your grandparents.

As you come to understand more about your cousins’ relationships, you can expand the family tree beyond your immediate family and explore people who are your distant relatives.

If you have questions about how to start and expand your family tree, GenealogyBank can help you with that.

(1) Enter Details to Start Searching for Your Ancestor

All you need to begin searching for your ancestor on our website is to enter a name in the search box on the home page. If you get too many hits, you can narrow the search results by keywords, date range, city, state, and any specific newspapers you would like to search.

(2) Create Your Family Tree

As you read the search results and begin to find stories and details about your family in newspaper articles and other records, record this information in a family tree – a good way to create a picture of your family right from the beginning.

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(3) Search Billions of Records

At GenealogyBank, you can search your ancestors through our extensive archives, with more than 15,000 newspapers from all 50 states, including more than 313 million obituaries and death records, as well as the U.S. Census, Social Security Death Index, government publications, and historical books.

(4) Fill In the Blanks

The past is crucially linked to your present, and a family tree makes it possible to infuse new life into your heritage. This gives you a one-of-a-kind opportunity to discover new relatives and fill in any missing spaces on your family tree.

Not just that, you can learn about your ancestors’ stories thanks to historical newspaper articles – what life was like for them, important milestones in their lives, and how these people contributed to your family heritage that sets you apart from others. Your family history is waiting to be explored. Sign up here to start creating your family tree for free, discover untold stories, and renew your connection with your heritage.

Explore over 330 years of newspapers and historical records in GenealogyBank. Discover your family story! Start a 7-Day Free Trial

Note on the header image: genealogy research on a computer
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Related Article:

• How to Calculate Family Relationships: Cousin Chart (part 1)