Abdalong of Marseilles was a bishop of the Diocese of Marseilles in the 8th century during the reign of Charles Martel. He has a popular cult without official recognition which holds an informal feast day for him on March 1. The Roman Catholic Metropolitan Archdiocese of Marseille is an ecclesiastical territory in France. ... Charles Martel (or, in modern English, Charles the Hammer) (23 August 686 – 22 October 741) was proclaimed Mayor of the Palace, ruling the Franks in the name of a titular King, and proclaimed himself Duke of the Franks (the last four years of his reign he did not even bother... The calendar of saints is a traditional Christian method of organising a liturgical year on the level of days by associating each day with a saint, and referring to the day as the saints day of that saint. ... March 1 is the 60th day of the year (61st in leap years) in the Gregorian calendar. ...

References

Holweck, F. G. A Biographical Dictionary of the Saints. St. Louis, MO: B. Herder Book Co., 1924.