A family tree is a chart representing family relationships in a conventional structure. The concept of the family was previously introduced into Particle Swarm Optimization (PSO). To further study the multi-group structure of the Family PSO (FPSO), this paper introduces the family tree into the FPSO. It made different families form a family tree and a swarm consisted of some family trees. In our propose work, user has to enter the family information such as family surname, relationship between the family member and the user. According to this our propose algorithm FPSO analyze and cluster the relationship in tree based structure. From this tree based structure we are able to know the family generation in step by step. The root of the family members were displayed in numerical values .Our proposed System experimental result is the root of the family member (e.g., Grandpa) will be named as “1” the next following generation will be named as 1.1 and it goes on till the present generation of family members.