Sorry, forgot to explain that 'Sandy' is a nickname for Alexander.
Earliest Cullycapple roll book I have here at the moment is 1917- will have to look for earlier ones.
See reply #12 for 4 Spallin sisters I found there so far.
Also found an Annie Spallin (Presbyterian, age 4 in JUly 1917) but not sure where she fits in yet. The roll books list # on register, name, religion and attendance but not townland, dates of starting & leaving and father's occupation that will be in the registers.
Will also check some early school photos to see if any of either family are in them.