thanks tallpaul for your reply,
David john williams 'jack' (17 march 1915) was my grandad through my nan's second marriage(and also jacks second marriage), as my first grandad died at an early age of 42 (cancer)they met and married a few years later... my uncle ian, their son is 47 and dosent know of his grans name... he just knew her as granny... thats why im stuck !!!
jack had a son called david john with his fist marriage too... but sadly again, john died in 2000.. so thats another brick wall. so any ideas, would be great, thanks again sharon xx