Career
Previously a minister at Kilmaurs, he was consecrated a college bishop on 24 February 1712 by Bishop George Hickes (ie a bishop without a diocese) In November 1721 he traveled to Aberdeen and acted as Bishop Archibald Campbell"s vicar-depute. Gadderar supported the practice of primitive "usages" in the diocese, which brought him into a dispute with the College of Bishops at Edinburgh. After the resignation of Bishop Archibald Campbell in 1725, he was made Bishop of Aberdeen, remaining there until his death.
