William Augustine Brennan

Born in County Cork, Ireland, William Augustine Brennan appears in available records as a highly educated and unusually versatile figure. A memorial record describes him as a civil engineer, medical research writer, linguist, translator, and artist, and notes that he studied at the Cork branch of the Royal University of Ireland, earning a B.A. in 1890 in mathematics, mathematical physics, and experimental physics.

The same record says he worked with the Corps of Royal Engineers in Ireland before later moving to Canada and then to Chicago, where he was associated with the John Crerar Library and Abbott Laboratories. In later life, he reportedly retired to California to paint, suggesting that his interests extended well beyond technical and scholarly work.

Some details about his birth year are not fully consistent in the sources I found: one memorial lists him as born on August 28, 1864, while the query here gives 1867. Because of that conflict, it seems safest to say that he was born in the 1860s and led a notably varied life shaped by study, migration, and intellectual curiosity.