Datagrid Rows

[TMo]

I was wondering if it would be easy to add a line to a datagrid based on a
condition (if the notes field is not null). So for instance a normal row
would be like this

lname | fname | mname
Smith | John | Andrew
Jones | Tim | Amos

But lets say that there is a note associated with John Smith and not with
Tim Jones. Can I have my datagrid look like this:

lname | fname | mname
Smith | John | Andrew
Note: John goes by his middle name
Jones | Tim | Amos

Is this an easy thing to do with a datagrid? Any help would be appreciated.
TIA.