you will find Shristopher Bell's will of 1732 on MNB - it implies that he had only one son and some unnamed married daus (the only unmarried dau became jt admr with son)
Are you sure you wish to pursue this line - looks as tho much stacked against you but maybe one glimmer of hope is that christopher's wife remarried and her will can be found as Jony Crebbin 1741 (also in full on MNB) which names a dau Margt but not her married name.