Peter,
I realise your post was from a while ago now, but I am quite interested in your mention of the East End of London.
I have a William John SAWARD, born in the Rainham, Essex, area, which is now classed as the East End of London. Born around 1884 and ended up in Plymouth, Devon. Parents presumably a John and Sarah Ann
His wife was my great grandmothers sister and met a grisly end.
Interested to hear if you - or anyone else - can tie into this Saward family.