The Tusaw (n?) (u?) in the 1851 census and the probable Tusaw in the 1861 census might be A Tousaint. The phonetic spelling of the French pronounciation of Tousaint would just about equate to something like Tusan(w). There is a marriage in the NB parish records in 1863 for what s/b a much younger Tousaint Godine who may be related. No parental info is given.
Do you have the marriage info for Francis to Rebecca Trimm and Rebecca's baptism into the Roman Catholic church just prior to her marriage? Assuming this is the correct couple, her father's name is given on the baptism as Henry Trimm and her mother as Jane Lushau (w?).
You might find the Trimm family at this resource, in case you haven't looked already ... http://ngb.chebucto.org/index.html
Francis and Rebecca have another child listed as Juley age 8 in the 1891 census and there is an unnamed child registerd to Frank Goodine and Betsey Trim b. 21 Apr 1889.
I have so far been unsuccessful in a search for a birth for Frank and a marriage for Isaiah and Susan(ne?).