Child records

can i add a table grid inside a current record form and add child records inside contained in the main database?
i know i may not say it right but ill try

we have records like
a
b
c
d
e

i want when i open for example record a, to include record c and e as child records inside it being shown on a table grid so i can access them from the already appeared record.

like c is a's cousin for example and i want to include a family record
sorry for my bad description..............