He is their...
uncle
brother
grandson
son
He is Mr Star's brother, so he is Simon, Stella and Suzie's ...
aunt
granddad
uncle
brother
Simon is their ...
granddad
brother
uncle
son
She is Mrs Star's sister, so she is Simon, Stella and Suzie's ...
aunt
brother
grandma
granddad
Suzie is their
brother
parent
dad
granddaughter
Mr & Mrs Star are the children's ...
grandparents
brothers
parents
sisters
Stella is their ...
grandma
brother
uncle
daughter
They are Simon, Stella and Suzie's ...
uncles
parents
aunties
grandparents