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Draw a Family Tree with Branch Layout and Generational Tiers
Plan and draw a clear branching family tree with labeled generation rows, name-slot boxes, and tidy branch lines using a simple, checkable layout method.
Free lesson
Four exercises
Worked answers
Object Drawing Lessons
A family tree diagram is a layout problem before it is a drawing problem. You need to place people in generational tiers, connect parents to children with branch lines, and keep name slots readable. This lesson gives you a repeatable method: choose a generation count, assign row heights, place name-slot boxes on a grid, draw branches with consistent line conventions, and check the result with simple arithmetic. The convention here is that each name slot is a rectangle whose baseline sits on the tier line and whose midline marks the top of lowercase letters; letter styles vary, so the rubric rewards legibility and consistent placement rather than one exact handwriting style. All measurements are hypothetical examples you can replace with values measured from your own paper and pen.
Practice materials: Printable downloads are not available for this lesson yet. Use the instructions and four exercises below.
Set the tiers and the grid before drawing
Decide how many generations you will show. For a practice diagram, three tiers is manageable: grandparents at the top, parents in the middle, children at the bottom. Write the tier labels at the left edge of the page, one per row, so the reader can see the generational structure immediately.
Choose a row height that fits your name-slot boxes. As a hypothetical example, if your paper is 210 mm wide and 297 mm tall, you might reserve 30 mm at the top for a title, then use three rows of 55 mm each, leaving 42 mm at the bottom for notes. These numbers are examples only; measure your own paper and adjust.
Draw faint horizontal tier lines across the page at the top of each row. These lines are guides, not final artwork. Mark a vertical center line so you can balance branches left and right.
- Count the generations you need and write one tier label per row at the left margin.
- Measure your paper and choose a row height that fits a name-slot box plus a branch gap.
- Draw faint horizontal tier lines and a vertical center guide.
- Mark name-slot positions on the grid before drawing any branch lines.
Place name-slot boxes on a consistent grid
A name slot is a rectangle large enough for one name. As a hypothetical example, use boxes 40 mm wide and 12 mm tall, spaced 10 mm apart horizontally. Place each box so its bottom edge sits on the tier line for that generation. This makes the baseline of the name coincide with the tier line, which is the convention used throughout this lesson.
Within each box, write the name so that lowercase letters sit between the baseline and the midline of the box. The midline is an imaginary horizontal line halfway up the box. Uppercase letters may rise above the midline. Letter styles vary, so cursive, print, and mixed styles are all acceptable if the name is legible and the baseline is consistent.
Leave a gap between boxes for branch lines. If two parents are shown side by side, place their boxes adjacent with a small gap, then draw a short horizontal connector between them before branching down to children.
- Draw all name-slot boxes for one tier before moving to the next tier.
- Align each box bottom with its tier line.
- Write names with the baseline on the box bottom and lowercase letters below the midline.
- Check that no two boxes overlap and that gaps are wide enough for branch lines.
Draw branches with a clear line convention
Use one line style for parent-to-child connections and a different style, such as a dashed line, for uncertain or adoptive relationships if you include them. For a basic diagram, solid lines are enough. Draw a vertical drop from the parent connector, then a horizontal spread, then short vertical drops into each child box.
Keep branch lines outside the name-slot boxes so names stay readable. If a branch must cross a tier line, let it cross at a right angle and keep the crossing point away from text. Use a ruler for straight segments; freehand curves are acceptable only if they are smooth and do not touch text.
Label each branch only if needed. A small label such as 'parent of' near the connector can help, but avoid cluttering the diagram. The tier labels already carry most of the meaning.
- Draw a short vertical line down from the parent connector.
- Add a horizontal spread line at the midpoint between tiers.
- Drop short vertical lines into each child box top edge.
- Keep all branch lines clear of name text and tier labels.
Check the layout with simple arithmetic
Before finalizing, count the boxes per tier and compare with the space available. As a hypothetical example, if a tier is 180 mm wide and each box plus gap is 50 mm, you can fit three boxes with 30 mm left over. If you need four boxes, reduce the box width or the gap, or use two rows within the tier.
Check vertical spacing by adding row heights and gaps. If three rows of 55 mm plus two gaps of 10 mm equal 185 mm, and your paper height minus title and notes is 225 mm, you have 40 mm of slack. These numbers are examples; measure your own equipment and label any chosen values as hypothetical.
Finally, trace each branch from parent to child with your finger. Every child should have exactly one path back to a parent connector, and no branch should end in empty space.
- Count boxes per tier and multiply by box width plus gap.
- Compare the total with the measured tier width.
- Add row heights and gaps and compare with measured paper height.
- Trace every branch to confirm it ends at a name slot.
Worked example
On a hypothetical 210 mm by 297 mm page, plan three tiers with two name slots in the top tier, two in the middle tier, and three in the bottom tier. Use boxes 40 mm wide with 10 mm gaps. Check whether the bottom tier fits if the usable width is 180 mm.
Worked answer
Three boxes plus two gaps equal 40 + 10 + 40 + 10 + 40 = 140 mm, which fits within 180 mm with 40 mm left over. The layout is feasible. Place the three bottom boxes centered under the middle-tier connector, with branch lines dropping from the middle connector to each box top edge.
Four practice exercises
Exercise 1
A page has a usable tier width of 200 mm. You want four name-slot boxes of 35 mm width with 8 mm gaps. Does the tier fit? Show the arithmetic.
Show answer and check
Yes. Four boxes and three gaps equal 4 times 35 plus 3 times 8, which is 140 plus 24, totaling 164 mm. This is less than 200 mm, leaving 36 mm.
Why: Multiply box width by the number of boxes, multiply gap width by the number of gaps between boxes, add the two totals, and compare with the tier width.
Check: Recount the gaps: four boxes have three gaps between them. Confirm 164 is less than 200.
Exercise 2
You have three tiers with row heights of 50 mm, 50 mm, and 50 mm, and two gaps of 12 mm between tiers. The paper height is 297 mm and you reserve 40 mm for a title and 30 mm for notes. Does the layout fit?
Show answer and check
Yes. Three rows equal 150 mm, two gaps equal 24 mm, and the reserved space equals 70 mm. The total is 150 plus 24 plus 70, which is 244 mm, less than 297 mm, leaving 53 mm.
Why: Add row heights, add inter-tier gaps, add reserved title and notes space, then compare with paper height.
Check: Re-add in a different order: 70 plus 24 equals 94, and 94 plus 150 equals 244. Confirm 244 is less than 297.
Exercise 3
A middle-tier connector must branch to three child boxes. The child boxes are 40 mm wide with 10 mm gaps, centered under the connector. Describe where the horizontal spread line should start and end relative to the child boxes.
Show answer and check
The spread line should start above the left edge of the leftmost child box and end above the right edge of the rightmost child box, passing over the gaps. Short vertical drops then enter each box top edge.
Why: The spread line distributes the branch to all children. Aligning its ends with the outer box edges keeps the drops vertical and avoids diagonal lines that could cross text.
Check: Trace each drop from the spread line to a box top edge. Confirm three drops and no drop ending in empty space.
Exercise 4
You are drawing a name slot 40 mm wide and 12 mm tall. A name written in print has lowercase letters that rise 5 mm above the baseline. Where should the midline be, and does the name fit below it?
Show answer and check
The midline is halfway up the box, at 6 mm above the baseline. Lowercase letters rising 5 mm stay below the 6 mm midline, so the name fits the convention.
Why: The midline is defined as half the box height. Compare the lowercase letter height with the midline height to check the convention.
Check: Measure the box height, divide by two, and compare with the measured lowercase letter height. Confirm 5 mm is less than 6 mm.
Common mistakes
- Drawing branch lines through name-slot boxes, making names hard to read. Route branches around boxes and keep a clear margin between text and lines.
- Using inconsistent row heights so tiers look uneven. Measure each row height and mark tier lines before placing boxes.
- Writing names without a consistent baseline, so boxes look messy. Align each name baseline with the box bottom and keep lowercase letters below the midline.
- Crowding too many boxes into one tier without checking arithmetic. Calculate box width plus gap times the number of boxes and compare with measured tier width.
Self-check rubric
- Tier labels are present and match the number of generation rows.
- Name-slot boxes are aligned to tier lines and do not overlap.
- Names use a consistent baseline and lowercase letters stay below the midline; alternative letter styles are accepted if legible.
- Branch lines connect every child to a parent connector without crossing text.
- Arithmetic check for box width plus gap is shown or stated.
- Diagram is legible and free of stray lines that end in empty space.
Questions and answers
Do I need to show every generation?
No. Choose the generations that fit your page and purpose. Three tiers is a practical starting point for a practice diagram.
What if I do not know a name?
Leave the name slot blank or write a neutral label such as 'unknown'. Keep the box and branch so the structure stays clear.
Can I use cursive handwriting?
Yes. The convention is baseline on the box bottom and lowercase letters below the midline. Cursive, print, and mixed styles are acceptable if legible and consistently placed.
How wide should name-slot boxes be?
Wide enough for the longest name in that tier. Measure a sample name and add a small margin. Any numerical width you choose is a hypothetical example for your own paper.