Dictionary of Welsh Biography

A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z

GLENN , THOMAS ALLEN ( 1864 - 1948 ), soldier, historian, genealogist, and archaeologist ;

b. 8 Jan. 1864 in Pennsylvania , the son of Edward and Sarah Catherine Glenn , British subjects. Glenn had a distinguished military career both in America and in Britain . By 1903 he was a Lieutenant-Colonel in the American army , but he resigned from the U.S.A. services in 1905 and came to reside in Wales . He served as an officer in World War I and held a commission in the Home Guard in World War II . As an author he had an American period and a Welsh period, during both of which his genealogical works are noteworthy. After he came to live in Wales (at Newmarket , Meliden , Prestatyn , and, last of all, at Abergele ) he shared his labours between archaeology (he was prominently connected with the Dyserth and District Field Club and the Cambrian Archaeological Association ) and the history of some of the older Welsh families. In the latter work he was particularly skilled, for he was a tireless searcher into original records and a careful copyist . In addition, he possessed considerable ability as an amateur artist , as attested by his work in making armorial shields , etc.

Glenn m., 1904 , Meenie Mary , dau. of Robert H. and Jessie Tothill ; they had two daughters. He d. at Abergele , 30 Jan. 1948 ; his widow d. 4 Sept. 1949 .

Besides articles in periodicals ( Archaeologia Cambrensis , etc.) Glenn was the author of several books and monographs including Merion in the Welsh Tract … [Pennsylvania] ( Norristown , 1896 ); Some colonial mansions and those who lived in them ( Philadelphia , 1st series, 1899 , 2nd series, 1900 ); Welsh Founders of Pennsylvania , 2 vols., ( Oxford , 1911 ); Newmarket notes (Prestatyn Hundred, Flintshire) , Parts 1 & 2 ( Prestatyn 1911 , 1912 ); Northern Flintshire, historical, genealogical and archaeological , Vol. I, Parts 1-3 ( Horncastle , 1913 ); (with Lord Mostyn ), History of the Family of Mostyn of Mostyn ( 1925 ); The Family of Griffith of Garn and Plasnewydd in the County of Denbigh ( London , 1934 ).


  • Most of his genealogical and other manuscripts are in the National Library of Wales, NLW MSS 763-4, 1112-1114, 4417, 6341, 6737, 6990, 14015, etc.;
  • personal knowledge.


Sir William Llewelyn Davies, M.A., LL.D., F.S.A. (1887-1952), Aberystwyth

Published date: 2001