Gilla Isa Mac Fir Bisigh (died 1301) was an Irish

historian A historian is a person who studies and writes about the past and is regarded as an authority on it. Historians are concerned with the continuous, methodical narrative and research of past events as relating to the human species; as well as the ...

poet A poet is a person who studies and creates poetry. Poets may describe themselves as such or be described as such by others. A poet may simply be the creator (thought, thinker, songwriter, writer, or author) who creates (composes) poems (oral t ...

mathematician A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, mathematical structure, structure, space, Mathematica ...

and

astronomer An astronomer is a scientist in the field of astronomy who focuses on a specific question or field outside the scope of Earth. Astronomers observe astronomical objects, such as stars, planets, natural satellite, moons, comets and galaxy, galax ...

. ''Sub anno'' 1301, the

Annals of Connacht The ''Annals of Connacht'' (), covering the years 1224 to 1544, are drawn from a manuscript compiled in the 15th and 16th centuries by at least three scribes, all believed to be members of the Clan Ó Duibhgeannáin. The early sections, commenc ...

record the death of ''Gilla Isa Mac Fir Bisig,

ollam An or ollamh (; anglicised as ollave or ollav), plural ollomain, in early Irish literature, was a master in a particular trade or skill. Bard Generally, ''ollam'' referred to a professional poet or bard of literature and history, and a membe ...

of the Ui Fiachrach Muaide, a master of history and tales and poetry, of the

Computus As a moveable feast, the date of Easter is determined in each year through a calculation known as – often simply ''Computus'' – or as paschalion particularly in the Eastern Orthodox Church. Easter is celebrated on the first Sunday after th ...

and of many other arts.'' His family, the clan

Mac Fhirbhisigh MacFirbis (), also known as Forbes, was the surname of a family of Irish hereditary historians based for much of their known history at Lecan, Tireragh (now ''Lackan'', Kilglass parish, County Sligo). They claimed descent from Dathí (d.418?/4 ...

, were at the time resident in what is now

County Mayo County Mayo (; ) is a Counties of Ireland, county in Republic of Ireland, Ireland. In the West Region, Ireland, West of Ireland, in the Provinces of Ireland, province of Connacht, it is named after the village of Mayo, County Mayo, Mayo, now ge ...

. His father was Gilla Isa Mor Mac Fir Bisigh. Other notable members of his family were * Amhlaoibh mac Fir Bhisigh, fl. c. 1200. * Domhnall na Sgoile Mac Fir Bhisigh, fl.c. 1250. * Giolla Íosa Mór Mac Fhirbhisigh fl. 1390–1418. *

Dubhaltach MacFhirbhisigh Dubhaltach Mac Fhirbhisigh (), also known as Dubhaltach Óg mac Giolla Íosa Mór mac Dubhaltach Mór Mac Fhirbhisigh, Duald Mac Firbis, Dudly Ferbisie, and Dualdus Firbissius (fl. 1643 – January 1671) was an Irish scribe, translator, histor ...

, died 1671.

External links

* http://www.ucc.ie/celt/published/T100011/index.html

References

* ''The Celebrated Antiquary'',

Nollaig Ó Muraíle Nollaig Ó Muraíle is an Irish scholar. He published an edition of Dubhaltach Mac Fhirbhisigh's ''Leabhar na nGenealach'' in 2004. He was admitted to the Royal Irish Academy in 2009. Life and career A native of Knock, County Mayo, Ó Muraíle ...

Maynooth Maynooth (; ) is a university town in north County Kildare, Ireland. It is home to Maynooth University (part of the National University of Ireland and also known as the National University of Ireland, Maynooth) and St Patrick's College, Maynoo ...

, 1996. {{DEFAULTSORT:Mac Fir Bisigh, Gilla Isa Irish astronomers 13th-century Irish mathematicians Scientists from County Mayo 13th-century Irish historians 1301 deaths Irish genealogists Year of birth unknown Irish male poets Irish-language writers 13th-century Irish poets