A Descendant chart just shows a single person or couple from many generations back, at the top of your tree. From this couple will descend all their children, grandchildren, great-grandchildren etc. Any spouses of those descendants that have married into the family will also be included. This chart is excellent for you to keep track of who your cousins are and the common ancestor that connects you with your 1st, 2nd and 3rd cousins etc.
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These charts have a tendency to be very wide but not very tall due to the high number of children born to families in the Victorian era and the mid 20th century.
All the people in this tree will share (apart from spouses) some part of the DNA from the original oldest person at the top of the tree.
A descendant chart does not include:
Siblings of the person at the top of the tree.
Parents, siblings or any other relatives of people who have married into the family.