I just happened to open my tree that you have on My Heritage and you have my husband's cousin as my husband, whereas my tree on Family Historian shows it correctly. My husband's cousin Brian does have a wife whose name co- incidently happens to also be Barbara! I have tried going into the tree to edit this but I did not find a place to delete the wrong person and add the other. By the way I search through the people list on your site and my husband Trevor does not appear.
I don't see another Barbara or a Trevor in your tree. Since your tree is edited in Family Tree Builder, I suggest that you fix this there and publish it to your site again.
Make sure to also associate yourself correctly in your tree, following the directions in this FAQ:
