Wow!! 
Thanks very much, Madri & Glen Field, for all the information!
I was very surprised (and very very happy

) with all the information that you folks have found....(and how quick you've shared it!) super!

I was finding it very frustrating with the variation of names and surnames for those I was looking for and have come across some of the listings you have mentioned, but was never sure if it could be the same people I was looking for....
The only problem is that in finding the marriage of Mary Elizabeth Dempster & George Boyce - there is a George Boyce that dies in 1886 Dec (47 years) Yorkshire; my first thought was okay, she married George (I don't think her step-brother would be that old, would he?)but George passed away a year later (hence the 1891 Census showing a Mary E Boyce as widow) but there is also a George Boyce w/ wife Mary shown in 1891 & 1901 Census in Cambridgeshire (I think it's Cambs) - so in that regards I'm still pretty confused

I have found some birth records for Elizabeth Dempster/Dampster that suggest she was born in a Union Workhouse in Ely, Cambridgeshrire, while other listings just indicate Ely, Cambridgeshire... (any ideas as to why her mother would be in a workhouse and why she would give birth
there - if that is the case??)
I initially had the BC Vital Stats Death Record for Stander William Lawrence and saw the parents names on it - having no luck with finding
any info on Elizabeth Boyce & John William Lawrence I then did some searching but nothing definite and eventually sent away for SW's birth certificate which is good to have, but didn't really help very much more...
Again, my
huge huge thanks to you both for your details/information/suggestions, etc!! I greatly appreciate it!

BCSandra