The Longbottom family has members across three eras - Frank Longbottom in the Marauder Era, Neville Longbottom in the present era who has a daughter and two sons in the future era. Neville marries Hannah Abbott and has three children - daughter Alexis who is in Gryffindor house, son Bernard in Ravenclaw house, and youngest son Calvin also in Ravenclaw house.
1. Longbottom Family
there is one male in the marauder era
there is one male in the present era
there is one female and two males in the future era
Frank Longbottom
Marauder Era
Gryffindor House
Sixteen Years Old
Marries Alice Logan
One son. Called; Neville
Neville Longbottom
Present Era
Gryffindor House
Sixteen Years Old
Son of Frank and Alice Logan
Marries Hannah Abbott
One daughter and two sons. Called; Alexis, Bernard and Calvin.
Alexis Longbottom
Future Era
Gryffindor House
Sixteen Years Old
Daughter of Neville and Hannah
Sister to Bernard and Calvin
Bernard Longbottom
2. Future Era
Ravenclaw House
Fifteen Years Old
Son of Neville and Hannah
Brother to Alexis and Calvin
Calvin Longbottom
Future Era
Ravenclaw House
Fourteen Years Old
Son of Neville and Hannah
Brother to Alexis and Bernard