Ballinamore is in the Oughteragh Parish of Co. Leitrim.I think your Peter Prior lived in Cleenaghoo, Oughteragh Parish, Co. Leitrim.
Together we found the following children born to Peter Prior and Mary McParlin/McPartlan.
Catherine born 28th of August 1867 Thomas born the 11th of April 1869 James born the 16th of December 1871 Mary Anne born the 2nd of December 1874 Bridget born the 11th of November 1877 Peter born the 2nd of July 1880 Patrick born the 1st of April 1883 John born the 24th of September 1887
In the Leitrim-Roscommon 1901 Census, I found:
TownlandParishBaronyCountyDescription Head of household Surname Head of household Given Head of household Occupation Other occupants