Manx Genealogy

Margaret Norris b.1645 Arbory/ b.1668 Malew

On my family tree I have Margaret Norris b. 1645 in Arbory (who married John Caveen) but have no information about her ancestors. I have a DNA match with someone who also has a Margaret Norris b. 1668 in Malew - there are no ancestor details for this person either . I was wondering if our DNA match is through the Norris family? I know this is a stab in the dark but does anyone have any information about these two Margaret Norris so I can tie them together? Many thanks