Líon alt a bhfuil an ghné seo luaite iontu: 8
Bhí post aige mar chúntóir i Roinn na Fraincise sa tsean-Choláiste Ollscoile agus i 1911 bhí sé ar an gcéad mhac léinn a fuair scoláireacht taistil ó Ollscoil na hÉireann chun staidéar a dhéanamh i mBerlin, Bonn agus Freiburg ar theanga agus ar litríocht na Gaeilge
Fuair sé dochtúireacht sa diagacht ón Róimh in 1898, agus tar éis staidéir in Griefswald agus Bonn bronnadh dochtúireacht eile air in 1900
Bhí eolas maith aige ar Ghaeilge Chonnacht agus thug scoláireacht taistil é go Berlin, Bonn agus Heidelberg
In 1887 a ceapadh é ina ollamh le focleolaíocht chomparáideach in Freiburg, mar ar fhan sé go 1913 nuair a d’aistrigh sé go Bonn
air i 1963 agus maoiníodh léacht ina onóir in Harvard i 1969. Phós sé Else Klara Brede in Bonn ar 30 Lúnasa 1939
‘But throughout the period also, my chief mentor was Thurneysen, who remained in constant touch with me, and with whom I was able to spend the summer term in 1932 in Bonn after the change of government at home had given me a heaven-sent opportunity to abandon a career for which I was singularly unsuited and return to academic life’
While I was in the Gaeltacht in 1930 I was so much impressed with his forthright character and with his ability as a teacher of Irish that upon returning to Bonn, Germany, where I then was one of the editors of Hessen’s Irish lexicon, I made arrangements to have him come to Bonn in order that he might not only pursue his Celtic studies under Professor Rudolf Thurneysen[B4] there, but also might become a co-worker on the dictionary.’ I 1931 bhuaigh sé scoláireacht taistil Ollscoil na hÉireann agus lean air in Bonn go 1933, é ag staidéar ar an tSean-Ghaeilge, ar an bhfileolaíocht chomparáideach, ar an Sanscrait, an tSean-Ioruais, gach tréimhse den Ghearmáinis, an Ghréigis agus na seanteangacha eile agus na hábhair eile is suim le fileolaithe
Bhí sé ag múineadh in Ollscoil Friedrich Wilhelm, Bonn, anuas go 1976