When Sidney E Fagan was born in 1903, in Texas, United States, his father, Earl Vanzant Fagan, was 29 and his mother, Lula Lee McWhorter, was 23. He lived in Redwater, Bowie, Texas, United States in 1910.
shortened Anglicized form of Gaelic Ó Fágáin or Ó Faodhagáin, dialect forms of Ó hÓgáin (see Hogan , Hagan ) and Ó hAodhagáin (see Hagan ). Irish lenited f (spelled fh) is soundless, and a number of words beginning with vowels have gained an initial f in some dialects; such seems to be the case here.
occasionally an Anglicized form of Mac Phaidín (see McFadden ) or Ó Fiacháin (see Feehan ).