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Kelley, Hall Jackson

(Encyclopedia)Kelley, Hall Jackson, 1790–1874, American propagandist for the settlement of Oregon, b. Northwood, N.H. A schoolmaster in Boston (1818–23) and later a railroad surveyor in Maine, he founded (1829)...

mononucleosis, infectious

(Encyclopedia)mononucleosis, infectious mŏnˌəno͞oˌklēōˈsĭs [key], acute infectious disease of older children and young adults, occurring sporadically or in epidemic form, also known as mono, glandular feve...

Mortimer, Edmund de, 5th earl of March and 3d earl of Ulster

(Encyclopedia)Mortimer, Edmund de, 5th earl of March and 3d earl of Ulster, 1391–1425, English nobleman, son of Roger de Mortimer, 4th earl of March. He succeeded (1398) his father not only as earl of March and U...

Moore, Thomas

(Encyclopedia)Moore, Thomas, 1779–1852, Irish poet, b. Dublin. He achieved prominence in his day not only for his poetry but also for his love of Ireland and personal charm. A lawyer, he was for a time registrar ...

Mitchell, Maria

(Encyclopedia)Mitchell, Maria, 1818–89, American astronomer and educator, b. Nantucket, Mass. Mitchell taught school in Nantucket, and later became a librarian. On Oct. 1, 1847, Mitchell discovered a comet (1847 ...

McGee, Thomas D'Arcy

(Encyclopedia)McGee, Thomas D'Arcy məgēˈ [key], 1825–68, Canadian journalist and statesman, a leader in the movement for confederation, b. Ireland. He emigrated (1842) to Boston, where he became editor of the ...

McGuinness, Martin

(Encyclopedia)McGuinness, Martin (James Martin Pacelli McGuinness), 1950–2017, Northern Irish political leader, b. Derry. He joined the Irish Republican Army (IRA) as a young man and was active in both its regula...

Malema, Julius Sello

(Encyclopedia)Malema, Julius Sello, 1981–, South African political leader. Involved in the African National Congress (ANC) from a young age, he rose quickly in its influential Youth League, becoming a regional ch...

kinkajou

(Encyclopedia)kinkajou kĭngˈkəjo͞oˌ [key], nocturnal, arboreal mammal, Potos flavus, found from Mexico to Brazil and related to the raccoon. It has a long, slender body with soft, short, woolly hair of any of ...

Klein, Melanie

(Encyclopedia)Klein, Melanie, 1882–1960, British psychoanalyst, b. Vienna. She became a psychoanalyst after seeking therapy from Sandor Ferenczi, a colleague of Sigmund Freud, who encouraged her to pursue her own...