Looking for Mitchell & D'Arcy

I am looking for the relatives of Allen (1825) and Jane (1939 - nee D’Arcy) Mitchell. Allen is thought to have been born in Monaghan County but moved to Galway.   They married in The Cathedral Church of Saint Mary (Church of Ireland) Tuam,County Galway in 1860 and lived in Tuam until at least 1863 when their second child was born.  Sometime between January 1863 and February 1865 the family moved to the Clifden area.  Between Feb. 1865 and Sept. 1867 the family lived at Daily Hill.  Daily Hill is a house on a hill just southwest of Ballyconneely. Allen and Jane had two children in this house. The family moved again, this time they moved northeast, somewhere in Derrigimlagh, which is an area of bog land along the coast between Ballyconneely and Clifden. Between February 1870 and October 1875 the couple had three more children.  Children’s birth records indicate Allen’s mother was probably named Mary.  Jane's mother was probably named Peggy.  Their marriage record indicates his fathers name was William.  Jane's father’s name was Michael. Both were farmers near Tuam. The last child was born around late 1878 or early 1879.  The family, except the first son Tom, immigrated to Canada around 1882 settling in Vivian Ontario.   Tom went to Australia. The children were, Thomas William, Mary Jane , Allan, Sarah Jane, Margaret Elizabeth, John Allan, Richard Henry and Lucy Rose.

Jane had a brother named John D’Arcy, born about 1856 and a sister named Margaret.  John was a Deacon and then a Priest in the Church of Ireland.  He became Rev. John. D’Arcy, Precentor of St. John’s Cathedral, Belize, and Principal of the Diocesan College for Boys before dying (1902) at his wife’s parent house in West Rainton , England