Dominic Tweddle
... that before becoming director of the National Museum of the Royal Navy, Dominic Tweddle helped excavate the Coppergate Helmet, and published a chronology of post-Roman helmet types?
... that before becoming director of the <a href="./National_Museum_of_the_Royal_Navy" id="mwA00" rel="mw:WikiLink" title="National Museum of the Royal Navy">National Museum of the Royal Navy</a>, <b id="mwA04"><a href="./Dominic_Tweddle" id="mwA08" rel="mw:WikiLink" title="Dominic Tweddle">Dominic Tweddle</a></b> helped excavate the <a href="./Coppergate_Helmet" id="mwA1A" rel="mw:WikiLink" title="Coppergate Helmet">Coppergate Helmet</a>, and published a chronology of post-<a href="./Late_Roman_ridge_helmet" id="mwA1E" rel="mw:WikiLink" title="Late Roman ridge helmet">Roman helmet types</a>?