The only son of Harfang Longbottom and Callidora Black was a pure-blood wizard. He had a sister. Nothing else is known about him, though it has been speculated that he was Neville Longbottom's grandfather or Algie Longbottom
*Arcturus Black II
*Lysandra Yaxley
*Harfang Longbottom
*Callidora Black
*Sister
*Arthur Weasley
*2 other cousins
*Frank Longbottom
*Neville Longbottom
The only son of Harfang Longbottom and Callidora Black was a pure-blood wizard. He had a sister. Nothing else is known about him, though it has been speculated that he was Neville Longbottom's grandfather or Algie Longbottom