Donna Rice, 43, and Jordan, 13, who were killed in Toowoomba's flash floods last week, have been buried in the same grave.
They were swept from the roof of their car in the CBD after a rescuer's rope snapped when the flood hit last Monday.
They were buried in the same grave at the Drayton and Toowoomba Cemetery.
"It's symbolic of him being in his mother's arms," Ms Rice's partner John Tyson told The Courier Mail.
"There's no way Donna would have let one of her kids go by himself.
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"If there is only one bit of comfort I can take out of the whole situation, it is that neither of them will be alone."
The couple's other son Blake, 10, was there to farewell his mother and brother.
About 150 mourners attended the funeral.
