Copy Multiple Rows Data To Single Column

transposing and sorting data into multiple columns.

Column 1 for example will have the Parent's Name. Column 2 will have the Children.

If Mark has 3 children, X Y and Z

Jim has two children, A and B

then I want Column 1 to display Mark and Jims Name and column two should display all the children

Here is how I want the data:

Column1 Column 2

Mark X
Mark Y
Mark Z
Jim A
Jim B

Please see attachment.