'Two other tablets state, that "Robt. Jordaine, merchant in Melcomb, left issue, Cokers, Jane and Edward," ...' 'The parish records of Melcomb Regis, the adjoining town to Weymouth, ... state that "Robt. Jordan was burried there, Oct. 12, 1589."'
There is no certainty that the burial record is for the merchant Robert Jordan (and not for his father or a different Robert Jordan), but the author seems to imply that the time period is right.
Note that the article does not specifically say that Robert Jordan the merchant was the son of Robert Jordan, Gentleman, the father of a Robert and a Henry. The article implies that the information on Robert the merchant was on a separate "tablet" than the information on Robert the gentleman. However, many have assumed that the merchant was the son of the gentleman.