What is the name of your state? Massachusetts
My father-in-law passed away. He left a biological son and daughter, an older adopted son with the same mother as biological children (ex-wife) and the youngest adopted son from a second marriage (mother is second wife, who is deceased). The youngest adopted son from the second marriage has produced a will from an attorney dated 1998 that leaves everything to him, with great detail of next in line through adopted son's wife and children. A clause is included disinheriting the two biological children, but refers to the biological son with his common name, not legal name (which would be hard for the father to forget, as bio son's legal first name is his father's name - common name used to prevent confusion in the first family) and daughters name. First adopted son is left out of the will totally. This will looks like it was written by the adopted son who inherits everything because 1) youngest adopted son only knows bio son by common name, and 2) youngest adopted son was unaware of the existence of the oldest adopted son until after father's death. To bio son, this seems very suspicious. Does it sound like there's a chance to challenge this will citing undue influence or mistake of fact?
My father-in-law passed away. He left a biological son and daughter, an older adopted son with the same mother as biological children (ex-wife) and the youngest adopted son from a second marriage (mother is second wife, who is deceased). The youngest adopted son from the second marriage has produced a will from an attorney dated 1998 that leaves everything to him, with great detail of next in line through adopted son's wife and children. A clause is included disinheriting the two biological children, but refers to the biological son with his common name, not legal name (which would be hard for the father to forget, as bio son's legal first name is his father's name - common name used to prevent confusion in the first family) and daughters name. First adopted son is left out of the will totally. This will looks like it was written by the adopted son who inherits everything because 1) youngest adopted son only knows bio son by common name, and 2) youngest adopted son was unaware of the existence of the oldest adopted son until after father's death. To bio son, this seems very suspicious. Does it sound like there's a chance to challenge this will citing undue influence or mistake of fact?