Sir John Joseph Caldwell Abbott, PC, KCMG, QC, BCL, DCL (March 12, 1821-October 30, 1893) was the third Prime Minister of Canada. He served in the office for seventeen months, from June 16, 1891 to November 24, 1892. He was also the great-grandfather of Canadian actor Christopher Plummer. Wikipedia
The definitive Wikipedia entry for John Abbott. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/John_Abbott
