Wm. McDonough's ship manifest has been found! Thanks to Kooky (Burch) Abad, who supplied the key dates of his emigration and arrival, I was able to do a search on the Ellis Island web site.

Sailed from Queenstown on Sept 23, 1909 and arrived in New York (Ellis Island) on Sept. 30, 1909

His ship was the Teutonic [pic attached]:
	Built by Harlan & Wolff Limited, Belfast, Northern Ireland, 1889. 9,686 gross tons; 582 (bp) feet long; 57 feet wide. Steam triple expansion engine, single screw.  Service speed 20 knots.  1,490 passengers (300 first class, 190 second class, 1,000 third class).Two funnels, three masts. 
	Built for White Star and Dominion Lines, in 1889 and named Teutonic. Liverpool-New York service. Captured the Blue Ribbon in 1891. Scrapped in Germany in 1921.

Worth reading is the captain's affadvait, which states in part, "I believe no one of said aliens is an idiot, or imbecile, or a feeble-minded person, or a pauper, or is likely to become a public charge, or is afflicted with tuberculosis or with a loathsome or dangerous contagious disease, or is a person who has been convicted of, or who admits to having committed a felony or other crime or misdemeanor involving moral turpitude, or is a polygamist or one admitting belief in the practice of polygamy, or an anarchist, or under promise or agreement, express or implied, to perform labor in the United States, or a prostitute, or a woman or a girl coming to the United States for the purpose of prostitution, or for any other immoral purpose..." 

There is some discrepancy on his arrival date. One page of the manifest (not the 2 that pertain to Wm. McDonagh) has 29 crossed out and 30 written in. So whoever wrote it was mistaken, or the ship was scheduled to arrive the 29th and was delayed, or...who knows?

The big surprise is that he doesn't state his birthplace is NOT Lackagh, Turloughmore, but Athenry, Turloughmore. 

Age 21, 5-foot-8, dark hair and complexion, grey eyes.

Occupation - 'draper's assistant' 
('draper' is a dated Brit. term for a dealer in fabric and sewing materials, and sometimes in clothing and dry goods) To find out more what that was like, read H.G. Wells 'Wheels of Chance,' an 1896 novel about a draper's assistant. http://www.online-literature.com/wellshg/wheelsofchance/  Type 'draper' in the search application and see what comes up.)

Last permanent residence - Athenry

Name & address of nearest friend of relative in country whence alien came - Mrs. James McDonagh / Turloughmore, Atheny

Final Destination - San Francisco

He paid for his own passage, and had $30 on him (originally written as $25, then crossed out, presumably after they frisked him).

It states he is going to join his brother Thomas, at 1014 Tennessee St., in San Francisco.
(This jibes with the 1910 census already up at www.bway.net/~tim - listing Thomas and William McDonough (sic) as roomers at 1014 Tennessee St.)