From 966 to 1789, 51 abbots followed one another the Michaelmas Mount. Some left bad memories, of other on the contrary brought a new breath to the abbey.
Aubert, founder of the Michaelmas Mount: 708 or 709 -? 725.

Phinimontius: medium of IXème century.

Maynard 1st: First abbot of the Benedictine abbey: 965 or 966 - 991.

Maynard II: 991 - 1009.

Hildeberg 1st: 1009 -? 1017.

For the three abbots according to, the dates are not certain.

Hildeberg II: ? 1017 -? 1023.

Almod or Aumode: ? 1023 -? 1032.

Théodoric: ? 1032 -? 1033.

Suppo: 1033 - 1048.

Raoul 1st of Beaumont: 1048 - 1058.

Renouf or Ranulphe: 1060 - 1084.

Roger 1st: ? 1085 - 1106.

Roger II: 1106 -? 1122.

Richard 1st of Mèré: 1123 - 1131.

Bernard of the Nozzle: 1131 - 1149.

Geoffroy 1st: 1149 - 1150.

During four years, the pope, the duke of Normandy and the monks of the Michaelmas Mount did not arrive to mettrent themselves of agreement to designate an abbot. The two following abbots certainly never reigned on the abbey.

Richard II of the Fly: ? 1152 -? 1154.

Robert Hardy: ? 1152 -? 1154.

Robert de Thorigny: 1154 - 1186.

Martin de Furmendi: 1187 - 1191.

The Jordan: 1191 - 1212.

For the three abbots according to the dates are not certain.

Raoul II of Isles: 1212 -? 1218 or? 1222 or? 1229.

Thomas of the Rooms: ? 1218 or? 1222 or? 1229 -? 1225 or? 1229.

Raoul III of Villedieu: ? 1225 or? 1229 - 1237.

Richard II Turstin: 1237 - 1264.

Nicolas Alexandre: 1264 - 1271.

Nicolas II Famigot: 1271 - 1279.

The following abbot reigned only little of time on the abbey.

Renouf II of Thorigny: 1280 - 1280.

Jean 1st Faé or Lefaye: 1280 - 1298.

Guillaume 1st of the Castle: 1299 - 1314.

Jean II of the Door: 1314 - 1334.

Nicolas III the Glazier: 1334 - 1362.

Geoffroy II of Servon: 1362 - 1386.

Pierre Roy: 1386 - 1411.

Robert II Jolivet: 1411 - 1444.

Jean Gonault, abbot by interim: ? 1420 - 1444.

Guillaume II of Estouteville: 1444 - 1483.

Andre Laure: 1483 - 1499.

Guillaume III of Lamps: 1499 - 1510.

Guerin de Laure: 1510 - 1513.

Jean III of Lamps: 1513 - 1523.

Jean IV the Huntsman: 1524 - 1543.

Jacques d' Annebault: 1543 - 1558.

François 1st the Russet-red one: 1558 - 1570.

Arthur de Cossé: 1570 - 1587.

François II of Merry: 1588 - 1615.

Henri of Lorraine: 1615 - 1641.

Jacques de Souvré: 1643 - 1670.

Etienne Texier d' Hautefeuille: 1670 - 1703.

Jean-Frederic Karq de Bebambourg: 1703 - 1719.

Charles-Maurice de Broglie: 1721 - 1766.

Etienne-Charles de Loménie de Brienne: 1766 - 1769.

Louis-Joseph of Montmorency-Laval: 1788 - 1789