To tie in with details to date in this thread, in case not found already.
The Leonard Collins family are on the 1911 Census free to view
https://www.census.nationalarchives.ie/pages/1911/Cavan/Arvagh/Longford_Street/319377/Ellen is listed as married with four children, her mother and two siblings.
It states she had had five children of which four were still alive. Presumably the four children listed. However, there are civil birth records for only the youngest three. Available at
www.Irishgenealogy.ie Also noting that the mother’s maiden name given for Maggie on the Dec 1904 civil record is GILMORE but COLLINS in 1907 for a Thomas and 1909 for Patrick.
After 1911 they had at least five more children in Arva
1911 Joseph
1913 Ellen
1917 Peter
1920 John James
1922 Bridget
I don’t immediately see Thomas Leonard, a marriage or birth for Mary c1903
There is a marriage on Oct 15 1898 in Beragh, Co Tyrone of a James GILMORE to an 18yo Ellen COLLINS. If correct, she possibly is listed on the 1901 census with a daughter named Annie Gilmore as a boarder with a Maguire family in Killeshandra, Co Cavan. Also listed are boarders Patrick COLLENS 15 and John COLLENS 19.
The birth (27.01.1900) and death in Killeshandra (21.03.1902) of Annie GILMAR/GILMORE are on Civil Records. Her death record states that her father is a Private in the 1st Battalion of the Royal Inniskilling Fusiliers serving in South Africa.
His regimental # was 2791. He died of wounds on Jan 31 1900.