re marriage of Charlotte and Samuel - on the NS Gen Web on line transcribed marriage records there is a record ofSamuel MCMILLAN not (MCMULLEN) and Charlotte. Census records also confirm this marriage date. I believe they were married at Wallace.
Charlotte is listed on the 1881 census as MCMULLEN in Colchester Co.,NS., with Samuel.
Is this part of your family line? - If u have more info to add please let me know.