The Clan/Sept History
O Madden originally appeared in Gaelic as Mac an Mhadaidh, which is probably
derived from the word madadh, which means dog.
Spelling variations of this family name include: MacAvaddy, Madden, O'Madden,
Madigan, Macavadan and others.
First found in county Galway, where they held a family seat from ancient times.
Some of the first settlers of this family name or some of its variants were:
Edward Madden settled in New England in 1753; John Madden settled in Barbados in
1663; Andrew, Bernard, Daniel, David, Hugh, James, John, Mary, Patrick, Peter,
Richard, Thomas and William Madden all arrived in Philadelphia between 1840 and
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