What is a 4th cousin?


Key Takeaways:

🧬 Fourth cousins are related through shared great-great-grandparents.
🌳 Fourth cousins may also have shared ancestors further back in their family tree.
🤔 The number of fourth cousins an individual has depends on the size and complexity of their family tree.
📚 Understanding who your fourth cousins are requires research into your family tree.
🔎 Finding fourth cousins can be done through talking with relatives, exploring historical records, or using online tools and apps that match DNA data.
🌐 Learning about your fourth cousins can uncover interesting stories and connections in your family history.

When it comes to family trees, the term “fourth cousins” can be a confusing concept. If you’re trying to figure out who your fourth cousins are or just want to learn more about them, this blog post is here to help. To understand this relationship, let’s start by taking a closer look at fourth cousins and how they fit into the bigger picture of family trees.

In short, the answer is: A group of individuals who are related through a shared great-great-great-grandparent.

Your Relationship with Fourth Cousins

Fourth cousins are related through the great-great-grandparents of both individuals. This means that if you and your fourth cousin share the same great-great-grandparents then you are related through them. For example, if your father’s mother’s mother’s parents were also the parents of your fourth cousin’s father’s father’s father, then you two would be fourth cousins.

In addition to being related through shared great-great-grandparents, fourth cousins will also have some shared ancestors further back in their family tree. This could include third great-grandparents, sixth great-grandparents, ninth great-grandparents, etc. The further back in their family tree these ancestors go, the less likely it is that someone will actually know who these people are and what kind of relationships they had with each other.

How Many Fourth Cousins Do You Have?

The number of fourth cousins an individual has depends on how many generations there are in their family tree and how closely related they are with each other. On average, an individual will have approximately eight fourth cousins although this number can vary significantly depending on factors such as whether or not siblings marry within their own families or if marriages occur between individuals with close relationships such as first or second cousins.


Overall, understanding who your fourth cousins are can be tricky at first but it’s really not as complicated as it may seem. All it takes is a bit of research into one’s family tree to determine who is related to whom and how closely each person is connected to one another. Knowing just a little bit about one’s family history can open up an entire world of interesting stories that otherwise would remain untold for generations! So next time you find yourself wondering about your 4th cousin – remember these tips! They’ll help make finding answers a lot easier!


1. What is a fourth cousin?

A fourth cousin is a relative who is related to you through shared great-great-grandparents, or ancestors further back in your family tree. They are typically the cousins we have the least amount of contact with and may be less familiar with than other relatives such as first cousins, second cousins, or third cousins.

2. How many fourth cousins do I have?

This number will depend on the size and complexity of your family tree. On average, an individual can expect to have about 8-10 fourth cousins, though this may vary depending on how closely related other relatives in your family tree are to each other.

3. How can I find my fourth cousins?

There are a few different ways to go about finding your fourth cousins. One option is to do some research into your family tree, either by talking with relatives or digging into historical records such as birth and death certificates, marriage licenses, census data, etc. Another option is to use online tools or apps that can help you locate fourth cousins by matching the DNA data of your relatives with others who have similar genetic profiles.

Q: What is a 4th cousin?

A: A 4th cousin is a person who shares a common ancestor with you, usually a great-great-great-grandparent. They are considered to be a distant cousin in terms of genealogical relationship.

Q: How do I determine if someone is my 4th cousin?

A: Determining if someone is your 4th cousin usually involves conducting a DNA test and comparing the results to see if there is a DNA match. You can also analyze the match list and look for common surnames and locations in the family trees.

Q: What does a 4th cousin DNA match mean?

A: A 4th cousin DNA match means that you and the other person share a certain amount of DNA that is indicative of being 4th cousins. It suggests that you both have a common ancestor who is a fourth generation of your family tree.

Q: Is a half-fourth cousin different than a fourth cousin?

A: Yes, a half-fourth cousin is different than a fourth cousin. A half-fourth cousin shares one common ancestor with you, while a fourth cousin shares two. The half designation indicates that the shared ancestor is either the mother’s side or the father’s side.

Q: What does it mean to be a cousin once removed?

A: Being a cousin once removed means that there is one generation difference between you and your cousin. For example, if your 4th cousin is one generation younger than you, they would be your cousin once removed.

Q: How can I find 4th cousin DNA matches for genealogical information?

A: To find 4th cousin DNA matches for genealogical information, you can take a DNA test with a reputable company like Ancestry DNA or Family Tree DNA. They will provide you with a match list that includes potential 4th cousin matches based on shared DNA.

Q: How much DNA do 4th cousins share?

A: On average, 4th cousins share approximately 0.195% of their DNA. However, the amount of shared DNA can vary depending on the specific relationship and the number of generations apart.

Q: Can I connect with my 4th cousins personally?

A: Yes, you can connect with your 4th cousins personally if you are able to identify them through DNA testing and establish contact. Many people have successfully connected with distant cousins to share family history and genealogical information.

Q: Is a fourth cousin a close relative?

A: A fourth cousin is considered to be a distant relative in terms of genealogical relationship. While they are still part of your extended family, they are not as closely related as immediate family members like siblings or first cousins.

Are 4th cousins considered siblings?

Are 4th cousins considered siblings? No, they are not. While they may share a common ancestor, the degree of separation is significant. Siblings share the same parents or at least one biological parent, whereas cousins, including 4th cousins, are relatives who share a common ancestor but have different sets of parents. Thus, the answer to the question are cousins considered siblings is a resounding no.

Q: Can a fourth cousin be a child of my 4th cousin?

A: No, a child of your fourth cousin would be a fifth generation of your fourth cousin, not a fourth cousin themselves. The fourth cousin designation just means there is a common ancestor who is a fourth generation of your family tree.