First counselor George Q. Cannon "holds that [apostolic] seniority rests with Apostles who have not been of the Twelve as well as the Twelve." Second counselor Joseph F. Smith disagrees. By Cannon's definition, John W. Young outranks both Cannon and Smith. This would make Young the church's presiding apostle after President Snow's death in 1901, even though Young has never been a member of the Twelve. Lorenzo Snow rules in 1900 that apostolic ranking is by entry into the Twelve and not by ordination date as an apostle. This ends the possibility of Young's presidency, but not his hopes.
[The Mormon Hierarchy - Extensions of Power by D. Michael Quinn, [New Mormon History database ( http://bit.ly/NMHdatabase )]]