Quote Originally Posted by Moosehead
Just to play devil's advocate here, but it seems mighty improbable that, given your Father's family's arrival in the US, that your Grandfather served with the Liverpool Scottish. Might I suggest, that more than likely, he aquired it from the original owner Captain Twentyman, whom the gent from the Museum seems quite familiar with.

Such being the case, I won't go into the protocol of wearing such an item.

Again, just adding a different point of view.
To echo Moosehead's comments, was your grandfather actually in the Liverpool Scottish, or was this something he purchased? If the latter, then I would say again that I would be hesitant to wear it at the wedding, and further (and this is just my opinion, take it for what its worth) -- I would consider donating the sporran to the regimental museum. Since it is apparent that Captain Twentyman was a key figure in the history of the regiment, an item such as this would most likely receive a prominent place in the museum collection. Items like this are very important to providing a "material account" of a regiment's history, and it would be nice to see it "go home" to the regiment if it doesn't have a strong connection to your family, such as a relative that served.

Again, this is just my opinion, as a historian and a park ranger at a Civil War battlefield, where we had many similar items pass through on a daily basis.

Regards,

Todd