Questão jurídica principal
Whether the parents can be ordered to pay ongoing child maintenance despite grandparents covering the son's needs.
Decisão extraída
No. The grandparents' voluntary support already discharged the parents' maintenance debt to the extent of their contributions, so no maintenance order was necessary.
Fundamentação extraída
A third party who intentionally pays the debtor's maintenance obligation liberates the parents pro tanto. The grandparents were found to be acting in place of the parents and to intend extinguishing their debt.