I'm hoping someone with legal knowledge can interpret this section from a relatives will:
"I give the rest of my net estate real and personal after payment of my debts, funeral expenses and testamentary expenses to be divided equally between such of my son and my daughter as shall be living at my death and if more than one in equal shares absolutely provided that if any of my said children dies before me but there are children of his or hers living at my death who attain the age if 18, those children shall take in equal shares the share which their parent otherwise would of taken."