This is an incomplete list of abbots through history. At the moment it is primarily of the Catholic Church however this is under correction. You are encouraged to add to this list.
Of Scottish origins, Abel travelled with other Christian teachers like Boniface and Willibrord to Franconia. He appears to have first operated in the abbey of Lobbes. On 3 March744 he became archbishop of Rheims in the synod of Soissons.
Despite support from king Carloman, Abel was not in the favour of Pope Zacharias. The pope refused to hand the pallium to abel and gave it to archbishop Hartbert von Sens instead. Thus Abel could not stand his ground and retired (probably in 745) to the abbey af Lobbes, where he continued to spread the word until his death in 764.
Sources
Allgemeine Deutsche Biographie - online version (http://mdz2.bib-bvb.de/~adb/)
Abel was incarcerated for "disturbing the peace of soul of His Majesty." Emperor Paul Petrovich remained unaware of this to the end of his days.
Soon a new prediction of Abel was trumpeted throughout Moscowabout the impending death of Alexander I, Nicholas Petrovich's ascension to the throne and the Decembrist revolt.
Abel replied to her, "The coronation will not give you cause to rejoice." These words were spread throughout Moscow, and many interpreted them to mean that there would be no coronation at all.