Who is sitting third to the left of E?

H is third to the right of B who is the son of A.  E is an immediate neighbour of H and second to the left of his son.   F, who is married to B and is third to the right of E’s son.   C is mother of D. G is female but she is not daughter of C and H. G is in third generation G is female but she is not daughter of C and H.  G is in third generation.  F is not immediate neighbour of her husband’s sister.  E is son-in-law of H and is not immediate neighbour of D.  C and her mother A are immediate neighbour of each-other.   F is not immediate neighbour of her husband’s sister. E is son-in-law of H and is not immediate neighbour of D Case-1 In case 2 there is no such space for A and C.  So CASE2 is cancelled out. Final arrangement: Case-1 Blood relation Tree-