Hi Ann,
I don't think the 1901 census transcription will tell you anything new, but I'd agree - 99% certain it's your family (I'm NEVER 100% certain!
). Maybe when you're in Ireland you could look at the original if you're near the National Archives of Ireland - Dublin I think?
A marriage record would definitely be the easiest way to find Patrick's fathers name, but the 1868 baptism record you mention could just strike gold, considering the scarcity of Corbetts in Glanworth! And if the father turns out to be Michael then the chance of a connection is stronger. There were 4 other Corbett baptisms in Glanworth RC between 1860 and 1868 - Michael (1860), Michael (1861), Johanna (1863) and William (1865). The Michael Corbett on my 1911 census was aged 50...
You know that Patrick and Ellen were married in 1892/3 (from the 1911 census). Since Ellen (the eldest living child) was baptised in 1894 I think it's most likely that they were married in the same place, i.e. Glanworth RC parish. Maybe the Glanworth marriage register simply isn't online, or doesnt cover 1892/3? IFHF MHC should be correcting their Sources page soon - it doesn't currently list Glanworth RC parish!
On a whim I did a check for Patrick Corbett marriages in 1892/3 on the main IFHF site (all Ireland). It gives two possibilities - 1892 Co. Limerick, 1893 Co. Tipperary. As I said, I think these are unlikely, unless you know of a connection?
I was very lucky - I found marriage records for both sets of Irish grandparents at the IFHF online sites. If you're near Mallow then the Mallow Heritage Centre, which handles IFHF records for Co Cork NE, is based there so they may be worth a visit (never been there myself). They may give you some leads.
I'm actually in SE Asia! That's why I tend to do all my research on the internet, although I get back to England occasionally.
Cheers,
Pete
P.S. The 1911 census showed 10 children born alive, only 7 still living (all listed at that address). I rechecked, and there's two more Corbetts baptised in Glanworth RC parish between 1892 and 1911 - Michael (b1895) and Margaret (b1894). So they may be 2 of the 3 who died? Can't find a third though.