Granahan Family History
Granahan Name Meaning
Irish (Mayo): shortened form of McGranahan an Anglicized form of Irish Gaelic Mac Reannacháin ‘son of Reannachán’.
Source: Dictionary of American Family Names 2nd edition, 2022
View Census Data for Granahan | Data not to scale
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Between 1951 and 2004, in the United States, Granahan life expectancy was at its lowest point in 1951, and highest in 1971. The average life expectancy for Granahan in 1951 was 37, and 72 in 2004.