Bartholomew of Grottaferrata (d. 1055) was an abbot at the monastery at Grottaferrata. Events January 11 - Theodora becomes Reigning Empress of the Eastern Roman Empire. ... Grottaferrata is a town with a Basilian monastery near Rome, sometimes said to occupy the site of Ciceros Tusculanum and situated on the lower slopes of the Alban hills, in the Diocese of Frascati, two and a half miles from the town itself (41°47′N 12°40′E...

He was a personal disciple of the founder of the abbey Nilus the Younger. He became Nilus' third successor in the position of abbot. Under his administration, which continued for some forty years, the monastery established a firm basis which would allow it to continue to this day. Nilus the Younger or San Nilo di Rossano (910 - December 27[1], 1005) was an Italian saint. ...

Like his teacher, Bartholomew was a hymn-writer and noted calligrapher. He is also described as having a very sympathetic nature, and being unable to see anyone suffer without giving that party comfort.

He is regarded as a saint, with a feast day of November 11. In traditional Christian iconography, Saints are often depicted as having halos. ... 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. ... is the 315th day of the year (316th in leap years) in the Gregorian calendar. ...

References

Attwater, Donald and Catherine Rachel John. The Penguin Dictionary of Saints. 3rd edition. New York: Penguin Books, 1993. ISBN 0140513124.