OK then, if the central couple are Selim and Anna and its their wedding anniversary (or maybe 50th/60th birthdays?) then the other people on their row are their 3 sons and 4 daughters ...
The two prosperous confident looking men might be Selim's brothers Ozias and Ephraim ...?
trying to work out who the 2 young children could be ... in hopes that will help date the photo
1st daughter Lucretia (b 1872) had one son in 1911
2nd daughter Anna (1874) had daur 1904, son 1908, son 1909, daur 1912
3rd daughter Blanche (1877) had son 1898, son 1899, daughters 1902, 1907, 1909, 1911, son 1916
1st son Harry (1879) had daur 1904, son 1906
2nd son James (1882) --no children
4th daughter Rosa (1885) had sons 1912, 1915, 1929
3rd son Herbert (1891) had daur 1923, son 1924
I don't see any babies or young girls; the first female grandchild is born 1902, and the next in 1904 -- I suppose there are all sorts of reasons very young babies & toddlers might have been kept out of the photo.
If we imagine its c1905, that would make the two young boys sons of Blanche aged 6 and 7 --does that seem reasonable?
How old do you think the stylish young lady with the swept fringe is? and the dapper young man with the stripey tie? it looks as though nieces and nephews are in the main absent, except perhaps for these two.