HTML
----
<table id="t1">
    <colgroup>
    <col span="7">
    <col span="2" style="background-color: lightblue">
  </colgroup>
  <tr>
    <th rowspan="2">
      gramps
    </th>
    <td>
      1
    </td>
    <td>
      2
    </td>
    <td>
      3
    </td>
    <td>
      4
    </td>
    <td>
      5
    </td>
    <td>
      6
    </td>
    <td>
      7
    </td>
    <td>
      8
    </td>
    <td rowspan="2">
dad
    </td>
  </tr>
  <tr>
    <td>
9
    </td>
    <td colspan="2">
      <p>aunt gertrude</p>

    </td>
    <td>
      10
    </td>
    <td>
      11
    </td>
    <td>
      12
    </td>
    <td>
      13
    </td>
    <td>
      14
    </td>
  </tr>
</table>

---


CSS

---
table, th, td {
  border: 1px solid black;
  border-collapse: collapse;
   min-width: 100px;
  min-height: 100px;
  text-align: center;
}

tr {
  min-height: 100px;
  height: 100px;
}
---