How to Choose the Best Starting Ancestor for Descendancy Research

Choosing the right starting ancestor when beginning a descendancy research project in genealogy

How to Choose the Best Starting Ancestor for Descendancy Research: Descendancy Research Series – Part 2

​Once you've decided to research your ancestors' descendants, the next question is often the hardest: Which ancestor should you begin with?
It may seem like a simple decision, but choosing the right starting point can make the difference between an enjoyable, productive project and one that quickly becomes overwhelming.
Over the years, I've found that a little planning before you begin can save countless hours later. Rather than selecting an ancestor at random, I recommend choosing one that gives you the greatest opportunity for success while keeping the project manageable.
Here are the factors I consider when deciding where to begin.

Start with an Individual or an Ancestral Couple

One of the first decisions you'll need to make is whether to begin with a single ancestor or an ancestral couple.
In most cases, I recommend starting with an ancestral couple whenever possible. This allows you to research all of their children and descendants together, providing a more complete picture of the family.
If information about one spouse is limited, however, beginning with an individual ancestor may make more sense until additional records are located. If an ancestor has more than one spouse, you may want to choose that individual to start with.

Four to Five Generations Back Is Usually Ideal

​One of the most common mistakes I see is starting too far back in the family tree.
While it may be tempting to begin with your earliest known ancestor, doing so can create an enormous amount of unnecessary work. Every additional generation dramatically increases the number of descendants you'll need to research.
In many cases, I find that choosing an ancestor about four to five generations back strikes a good balance. The family is large enough to provide valuable clues while still remaining manageable for most research projects. 

Consider an Immigrant Ancestor

If your goal is to better understand how your family arrived in a new country, an immigrant ancestor often makes an excellent starting point.
Researching all of their descendants can reveal migration patterns, settlement locations, occupations, military service, family traditions, and how later generations spread across the country.
You may discover branches of the family you never knew existed.

Choose Someone with an Interesting Story

​Sometimes the best starting ancestor is simply the one who sparks your curiosity.
Perhaps they served in the military, survived a historical event, immigrated from another country, or left behind an intriguing family mystery.
Research is often easier, and a lot more enjoyable, when you're genuinely interested in the person you're studying.

Why I Usually Recommend an Ancestor Who Was Living Around 1850

​Whenever possible, I recommend choosing an ancestor who lived around the mid-1800s.
For many researchers in the United States, this provides access to a growing number of census records and other valuable historical sources while keeping the project within a manageable timeframe.
Beginning much earlier often means working with fewer surviving records and significantly more generations of descendants to research. 

Don't Make the Project Bigger Than It Needs to Be

​I learned this lesson firsthand.
For one of my own family lines, I decided to begin one generation earlier than I normally recommend. While it certainly can be done, it also created considerably more work because every additional generation adds more descendants to research.
That experience reinforced something I still recommend today: start with a project you can realistically complete before expanding it further.
There's always time to go back another generation later.

Think About Your Research Goal

Before selecting a starting ancestor, ask yourself:

• Are you trying to break through a brick wall?
• Are you looking for living relatives?
• Do you need potential DNA testers?
• Are you searching for family photographs or heirlooms?
• Are you researching an estate or probate case?
• Are you simply hoping to better understand one branch of your family?

Your research goal often determines the best place to begin.

You Don't Have to Start with the "Oldest" Ancestor

Many beginners assume they should always start with the earliest known ancestor in their tree.
In reality, that's rarely necessary.
A more recent ancestor usually provides plenty of opportunities to learn descendancy research techniques while producing faster and more rewarding results.
As your confidence grows, you can always expand your research to earlier generations.

Start Smart, Not Big

One of the keys to successful descendancy research isn't simply choosing an ancestor—it's choosing the right ancestor.
By selecting a manageable starting point that fits your research goals, you'll build a stronger, more organized descendancy tree while avoiding unnecessary frustration.
Remember, every successful research project begins with a single ancestor. Choosing that ancestor wisely can set the stage for discoveries that extend far beyond your direct family line.

​Part 1: Why You Should Research Your Ancestors' Descendants (And Not Just Your Direct Line)

This is #2 in a series based on my 2017 "Finding Descendants in Your Family Tree" presentation

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