1821 Census

Residents of house 27 in Drumkirk (Lavey, Cavan)

Surname	Forename	Age	Relation to head
Rudin	Luke	27	–	Farmer
Rudin	Margt	26	Wife	–
Muligan	Mary	50	Mother In Law	Spinner

Griffith’s Valuation

1901 Census

Residents of house 6 in Drumhirk (Stradone, Cavan)

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Surname	Forename	Age	Sex	Relation to head	Religion
Ruddy	Cathrine	37	Female	Head of Family	Roman Catholic
Ruddy	Luke	21	Male	Son	Roman Catholic
Ruddy	Rose Anne	18	Female	Daughter	Roman Catholic
Ruddy	Patrick	14	Male	Son	Roman Catholic

1911 Census

Residents of house 11 in Drumhirk (Stradone, Cavan)

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Surname	Forename	Age	Sex	Relation to head	Religion
Ruddy	Maria	25	Female	Head of Family	Roman Catholic
Ruddy	Mary Anne	3	Female	Daughter	Roman Catholic

The name here seems to vary between each major record from Rudin to Ruddy but it seems probable that this is the same same family.