1871 Born Norfolk
1871 census at Broome, Loddon, Norfolk,
1881 census
1891 census There is a 'Harry Crowfoot' living as a Lodger at Brewery, 56 Shelfanger Road, Diss, Norfolk aged 20. A Caretaker & Brewers Clerk. Born Broome, Norfolk 1871
1921 Missing list "Gunner, 1 Royston Villas, Shelfanger Rd, Diss, Norfolk"
1955 Died Norwich
Had a go at this. I think it is the correct (extended) family (given the address) but probably not this man. He is a bit old and I can follow him back and forth across the Atlantic. He had US draft card in 1918 and don't think he would have come back to serve in Ireland after that, he would have been 50..
He did have a step son Henry born 1891, and 2 brothers and half brothers, who could also have had children in the Army, but I couldn't find any likely one. The initials on the Collins List could of course be wrong!