Context:
Barry St. Leger
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Barry St. Leger
Barrimore Matthew "Barry" St. Leger (bap. May 1, 1733 – 1789) was a British colonel who led an invasion force during the American Revolutionary War.
Barry St. Leger was baptised on May 1, 1733, in County Kildare, Ireland.[1][2] He was the son of Sir John St. Leger and Lavina Pennefather, was educated at Eton College, and then at Peterhouse, Cambridge.[1]
Yes - with a schwa.
Not all 'Saint N' names work this way. 'Saint John' (when used as a surname) is sometimes pronounced /'sɪnjɪən/ [yes - stressed on the first syllable].
b
Some families of that name pronounce it as /səntˈleʤə/, but some pronounce it as /ˈselɪnʤə/ ....
Context is always important; labelling is rarely important.