Since you want the details of the data instead of the count,
or in other words, the date and the child name instead of a set of 1's,
use sum of Date and format the Pivot Table results with a date format.
For the second Pivot Table, replace C1,C2,C3 in the ChildName column
with the numbers 1,2,3 and use sum of ChildName.
Create a custom format (limited to 3 names):
[=1]"John";[=2]"Tim";"Fred"
and format the second Pivot Table results with this custom format.
If you have more than 3 names, you can use a lookup table,
but this adds complexity.