Hand gliding? ah yes wanking (not to be confused with hang gliding) The hand glider/wanker of the sugarloaf who you called grandad or the silly old c**t, was not in fact related to you. He was the last of his regement to reach your gran on the night in question and due to the long wait not to mention his nervous disposition he tipped on the ramp and his contribution ran down her leg with that of many other young men and was lost for posterity in the insole of her wellington. Your real grandfather is likely to be any of the first 15 brave soldiers who faced her. They all lost their lives to pox. The insole was recycled and was last heard of forming part of the SUSPENSION of a 1952 ford prefect, the sugarloaf hand glider/wanker had no other off SPRING that i know of...
PS... If you require more information regarding your family dont hesitate to ask .....