5 ▁and ▁retired ▁from ▁the ▁army ▁in ▁ 1 9 5 7 . ▁ ▁Other ▁work ▁Bon de ▁possessed ▁the ▁ent a iled ▁estate ▁of ▁V ib y holm ▁and ▁le ased ▁the ▁ent a iled ▁est ates ▁of ▁H ör ning sh ol m ▁and ▁T j ol ö holm ▁until ▁ 1 9 6 4 . ▁He ▁was ▁chairman ▁of ▁the ▁students ' ▁union ▁of ▁Stockholm ▁University ▁College ▁from ▁ 1 9 3 2 ▁to ▁ 1 9 3 3 ▁and ▁the ▁Stockholm ▁University ▁Student ▁Union ' s ▁feder ation ▁board ▁from ▁ 1 9 3 3 ▁to ▁ 1 9 3 4 . ▁Bon de ▁was ▁chairman ▁of ▁the ▁Swedish ▁Bridge ▁Federation ▁from ▁ 1 9 6 0 ▁and ▁was ▁vice ▁chairman ▁of ▁the ▁European ▁Bridge ▁League ▁from ▁ 1 9 5 0 . ▁He ▁was ▁chairman ▁of ▁the ▁World ▁Bridge ▁Federation ▁from ▁ 1 9 6 8 ▁to ▁ 1 9 7 0 . ▁ ▁Personal ▁life ▁Bon de ▁was ▁married ▁ 1 9 2 0 – 1 9 4 5 ▁to ▁Mar tha ▁El vi ra ▁August a ▁Elisabeth ▁M ör ner ▁( born ▁ 1 9 0 0 ), ▁the ▁daughter ▁of ▁the ▁chamber lain ▁and ▁ry tt m äst are ▁H jal mar ▁St ellan ▁M ör ner ▁and ▁Mart a ▁Jen ny ▁H ilda ▁Carolina ▁S ylvan . ▁ ▁He ▁married ▁the ▁second ▁time ▁in ▁ 1 9 4 6 ▁to ▁Gre ta ▁Sw art ling ▁( 1 9 0 5 – 1 9 6