Mr. X is having estranged reationship with his wife, contemplating to seek divorce from her. Meanwhile,.he wants to buy a property in the name of his two male children aged 3+ &4+. He wants to make his siter as guardian till the age of 18. Is this step legal? Can it be challanged by Mr. X's wife during divorce proeedings or there after? Please advice any better way to avoid litigation between Mr. X sister and his estranged wife before or after the divorce.