Family Law Questions? Ask a Family Lawyer Online.
If the out of wedlock brother proves that he is in fact a sibling of sister and brother executor by DNA testing, then he will probably be given a full share in the father's estate. The fact that father and mother got married and might have acknowledged the paternity during their marriage can be very strong evidence of paternity.
I hope that I have provided excellent service and, if so, would appreciate a 5 star rating. If not, please let me know how I can further assist you. There is no additional charge to you for rating me. A bonus is not required, but is always appreciated.
Thanks for using JUST ANSWER.