Complex sentence: Baron Thomson of Fleet is frequently mentioned as a Canadian baron; however, he is simply a Canadian citizen with a British peerage, where the current Baron of Longueuil is a British citizen with a Canadian peerage.
Split into simpler sentences: Baron Thomson of Fleet is frequently mentioned as a Canadian Baron. However, he is simply a Canadian citizen with a British peerage, where the current Baron of Longueuil is a British citizen with a Canadian peerage.