What does Seamus mean?
Seamus \se(a)-mus\ as a boys' name is pronounced SHAY-mus. It is of Irish and Hebrew origin, and the meaning of Seamus is "he who supplants". Variant of James. "Shamus" is sometimes used as an American slang for a private detective. Poet Seamus Heaney.
For more on this name, see also the related boy name Jacob.
Seamus has 27 more related variations via James: Diego, Diogo, Giacomo, Hamish, Iago, Jacob, Jacques▼, Jago, Jagu, Jaime, Jaimey, Jaimie, Jame, Jameson, Jamey▼, Jamie▼, Jamison, Jascha, Jayme, Jaymes, Jaymie, Jem, Jemmy, Jim▼, Jimbo, Jimmie▼ and Jimmy.
Seamus is an unusual first name for men. Seamus is an equally unusual last name for all people. (2000 U.S. Census)
Charted below is the baby name popularity of Seamus for boys. Seamus entered the list in 1995 and reached its apex rank of #735 in the U.S. in the year 2003, and is at #900 currently. (Top 1000 Birth Names Records, 2014)
Diego (#129 in 2014), Hamish, Jacob (#4), Jacques, Jaime (#468), Jame, James (#9), Jameson (#159), Jamey, Jamie (#786), Jamison (#440), Jayme, Jim, Jimmie and Jimmy (#523) are the popular varying forms of Seamus (#900 in 2014). These boy names reached the peak of their popularity during 1970-1979 (usage of 0.4756%) and are now significantly less widespread (usage 0.3489%, down 26.6%), with the versions Jacques, Jamey, Jamie, Jim and Jimmie falling out of style. The most trendy boy names here are Diego (#129), Jacob (#4), Jaime (#468), Jameson (#159) and Jamison (#440), and there is also a rekindling in baby name popularity for Diego and Jacob. Displayed below is a comparison of the usage of the boy name Seamus and affiliated names. (Top 1000 Birth Names Records, 2014)