[4] He hosted Sir Patrick Vans of Barnbarroch, a Scottish ambassador negotiating the marriage of James VI of Scotland with Elizabeth the elder sister of Anne of Denmark, for a night at Elsinore on 8 June 1587.
At that time Wedderburn loaned Mr John Learmonth money and Barnbarroch and Peter Young were his security for the debt of 18 Danish dollars and 8 shillings.
Barnbarroch's kinsman, William Wallace of Failford mentioned meeting Wedderburn during the king's visit to Elsinore in 1590.
[6] In Danish records, which include payments for the Scottish wheat flour and green cloth supplied to the king, "Skotsk hvidemel" and "grønt klaede", his name appears as "Richardus Vederborn".
[7] Another Scottish embassy, that of Lord Ogilvy and Peter Young, sent to attend the coronation of Christian IV in September 1596, stayed with him in August, and he claimed 516 dalers from the King of Denmark.