Find Ancestors

hi. have posted a message before but just in case it s lost in the mist of time here goes. I am trying to trace the whereabouts or anyone with a connection to my gt grandfather william robinson.he was married to an elizabeth with who he had 5 daughters,alice,mary,emma, elizabeth and louisa.he was widowed then at the turn of the century he married again( cannot find marriage) to a Florence Allen and had ten more children one of who was my grandmother lily.their names were william,henry,george,victor, albert,leonard,grace,ethel,lily and beatrice(betty).he was an IVORY WORKER which is unusual.have found him on several of the censuses but not the one which tells me who his parents were therfore im at a complete brick wall! any info at all would be welcome. oh and they all lived in and around the hackney area of the east end of london,and william was listed as an ivory worker/crochet hook maker. thanks jackie