1. Is your mother demised? Do you have any siblings? Have you probated the will?
2. Since the will has been made in your favour you are the owner of the property and can sell the same at your sweet will. However, if your mother has any other heirs then it is advisable to first probate the will. Probate should precede the sale of the property by you so that no subsequent challenge is laid to the sale by any of your siblings (if any). Once the probate has been granted by the court you can sell the property and pocket the sale proceeds absolutely.
3. Neither your wife nor children can impede the sale of property by you. The only scenario in which an embargo can be placed on your right to sell the property is if your wife has filed a case for domestic violence against you. If no such case has been filed against you then you are free to sell the property after probate has been granted by the court.