Nicholas Forrestal was a New Ross merchant who emigrated to America with his wife Ann Cantwell and their twins Bridget and William, he is the progenitor of the Forrestal lineages of Milwaukee, WI, and Aurora, IL. Nicholas was the son of James Forrestal of Bahana, St Mullins, and his wife of Bridget Jordan, the daughter of Francis Jordan and Mary Kavanagh of Inch. Nicholas was the grandson of James Forstall and Elizabeth Lawlor, and great-grandson of Nicholas Forstall of New Ross, the son of Pierce Forstall or Forrestal, Gent, of Carrickcloney Castle (d. 1683) and Mary Aylward of Aylwardstown. Elizabeth Lawlor, Nicholas’s grandmother, was the daughter of Stephen Lawlor of Mohullen and Mary Kavanagh, also of the Inch Kavanagh lineage. The Inch Kavanaghs’ were the descendants of Gerald Kavanagh of Ballybrannagh, the son of Brian mac Cahir MacMurrough Kavanagh (d. 1578), Chief of Slíocht Diarmuid Lámhdearg. Gerald’s grandson, the son of Tirlough, was Simon Kavanagh, Gent, of Seskin, a Jacobite Captain who fought at the Battle of the Boyne. Simon built a Mansion house at Inch where his descendants lived in the 18th century. Simon’s son Gerald Kavanagh of Inch, married Elizabeth Butler of Munphin, Co. Wexford.
Nicholas and Ann’s son Richard William Forrestal (1861-1913) was a head contractor for Forrestal Bros. the family firm which held large labor contracts in Milwaukee, Superior, Duluth and St. Paul. Forrestal Bros. built the Milwaukee Flushing tunnel in 1888 which was the largest labor contract on record for Milwaukee at the time. In addition to being a head contractor for the firm, Richard ran a saloon in St. Paul, Minnesota, where he held an additional residence with his family.
Richard was wed to Margaret Rossiter Kiely, the daughter of John Kiely of Waterford and Margaret Kehoe or Keogh. Margaret Kehoe was the daughter of Paul Kehoe and Mary Rossiter; her sister Bridget Kehoe or Keogh was wed to William James Aylward (1839-1911), a Great Lakes shipbuilder, shipyard owner, and ship captain. William James Aylward and Bridget Kehoe were the parents of William James Aylward (1875-1936), a WWI war artist who illustrated The Sea Wolf and Twenty Thousand Leagues Under The Sea. Paul Kehoe or Keogh, the father of Bridget Kehoe and her sister Margaret Kehoe, was the son of John Kehoe and grandson of Paul Kehoe, Gent, of Nash Castle, Newbawn, Co. Wexford who held Nash Castle through Gerald Kavanagh, Gent, of Ballybeg, grandson of the aforementioned Gerald Kavanagh, Gent, of Inch; Gerald Kavanagh of Ballybeg was the uncle of General Thomas Cloney, an insurgent leader of the 1798 Rebellion in Wexford.
Richard William Forrestal (1861-1913) and Margaret Rossiter Kiely were the parents of Richard William Forrestal II (1902-1980), Paul Patrick Forrestal (1899-1981), and John Joseph Forrestal of Milwaukee and New Orleans (1890-1962), including several other children. John Joseph Forrestal was wed to Estelle Forster, the daughter of Benjamin Ashworth Forster, President and founder of Forster Textile Mills; John and Estelle were the parents of Richard William Forrestal III (1924-2020) whose descendants reside in Ireland, Austria, and the United States.
The chart below is from the most recent edition of The Lineage of Mullennahone 1571-1855 published in September of 2022. The book includes hundreds of footnotes, references, and crucial evidence pertaining to the Mullennahone and Carrickcloney Forstall or Forrestal lineage and their descendants.