I have a great deal of information about Grizella MacBurnie/McBurnie. My great grandmother...Susan McBurnie...was a sister to Grizella.. Susan was born in 1798 and married Edward Langille, born 1795.
I know Grizella married twice...# 1 ...Robert Douglas
#2...William H bucckler
I understand William H was your ancestor? Do you have any idea when he and Grizella married? I haven't got a marriage date for either marriage.
Hoping for the best