The family of two infants killed in a fatal house fire that claimed four lives is pleading for prayers as they struggle with the devastating loss.

Maddison Symons, 20 months, brother Desmond, five months, a teen and family friend Mathew Chilly, 36, died when their Central Queensland home erupted in flames on Thursday.

"Our family is shattered," relative Sally Woulfe said.

"Maddison was full of life and laughter, always smiling and curious about the world around her.

"Little Desmond was a gentle, happy baby whose laughter brought light to everyone who met him.

"Their bond was pure love - and they were taken far too soon."

A GoFundMe campaign for the families was launched within hours of the tragedy and had raised more than $5000 by Friday morning.

"We are reaching out to the communit

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