Thomas Eustace joined with his cousin James
Eustace, Viscount Baltinglass in the rebellion of 1580. He was captured
and in 1581 was executed together with his eldest son Christopher
Eustace who was only nineteen and died with very great bravery. The
forfeited estates were unsuccessfully claimed by Sir Maurice Eustace of
Harristown in 1700. The estate at this time included Gaganstown (Yagoestown),
Swordlestown, Morganstown and considerable lands in Clane. Younger
children of several of the previous generations had married into other
branches of the family.
Part of Kerdiffstown, two miles north-east of Naas,
with other land was occupied by the Eustaces for more than a century.
(The remainder of Kerdiffstown including Kerdiffstown House, was owned
by the Kerdiff family, with whom the Eustaces intermarried.)
Christopher Eustace of Kerdiffstown, late of Kilussy, was High
Sheriff in 1465, 1474 and 1475. He leased Donode castle and its lands
from Sir Robert Eustace of Ballycutland (Coghlanstown). By his wife
Elizabeth Ashe of Forenaghts he had a son Waldron Eustace who
married Margaret, daughter of Lawrence Sutton of Tipper. His son
Nicholas, a juror in 1551, married first Margery, daughter of Sir
William Wogan, and second Anne Eustace, daughter of 1st Viscount
Their son Thomas Eustace married Joan
Eustace of Mainham who was the daughter of William Eustace, who was High
Sheriff of Kildare in 1544 and married Margaret FitzGerald of Allen and
died in 1557. (When appointed High Sheriff, William was described as
William Eustace of Moone.) William was survived by a son, JAMES,
and a daughter, Joan, who married Thomas Eustace of Kerdiffstown.
William Eustace presumably son of Edward of
Clongoweswood, held the estates in 1519 and married Margaret
Fitzmaurice, with issue: Alexander; Anne who married Nicholas Wogan of
Rathcoffey and died 1537; and Eleanor who married John Talbot (dvp
1519), son of Robert Talbot of Belgard and his wife Margaret Eustace of
Ballycotelan. Eleanor later married Richard Walsh.
Alexander Eustace, William’s son, married
Joan, daughter of Christopher Eustace of Kerdiffstown (High Sheriff 1465
and 1474-5). He died in 1557, leaving a son, WILLIAM and a
daughter, Eleanor, who married Gerald FitzShaun FittzGerald of Donore.