Robert Wilson born March 1927 is my grandfather! Was your husband's grandmother Sarah?
The reason I started looking into this was because I am a member of 23andme.com and with my genetic profile it said I had a distant cousin in Scotland and after discussions and the info on your post and the ship records we figure his great grandmother was the first cousin of mine (Mary Rennie Wilson). He also said they'd come from Ireland and he sent me some records and a picture of his great grandmother if you are interested. You can contact me at katherine.crossman [@] gmail [dot] com and I can forward his family tree info.