Marriage condition on Will

Hi Sir, Could you please help me understanding the condition in will which is made by my demised beloved father before 15 days of his death. In that will, he named after me some portion of the building in a plot, however there is a condition that Condition in hindi as per will "mai bhavan ke nichale tal ka bhag apni putri Miss Priya ke naam kar raha huin , mere mratyu ke bad meri putri ko sampatti aur adhikar prapt ho jayega, meri kisi uttra adhikari ko eteraj karne ka adhikar nahi hoga lekin meri putri miss Priya ki sadhi kar lene par di gayi sampati mere parivar ke jivit sadasyon ko bapis ho jayegi. Aur mai etad dwara putri priya ko anusuchi mai varnit makan ka bhaag apni eksha patra ka nispadak niyukt karta hun " will made on 28th sept 2004. Death of my father happened on 10th Oct 2004. My age was at that time 19 years. My questions are 1. If i will get married, will my portion return to my live siblings? 2. one of my elder brother died before 3 years, will his wife come under live siblings? will she get any share from my portion given to me by will? 3. Is the marriage condition is a legally valid one for a hindu girl? Please help me , i need the valuable inputs on this. Thank you very much !!