Theory about possible Gowans line

I have been testing out the hypothesis that since she had a son named Mark Gowans Cracket my 3x great grandmother Isabel (Isabella) Cracket may have had the maiden name Gowans and have come up with the possibility that her parents may have been William Gowans and Isabell Thompson married at Eglingham, Northumberland in 1792. I would welcome comments that either confirm or disprove this theory which you can find in more detail on my Brick Walls page under the heading “Theory about 3x great granny Cracket : need advice / confirmation”