My Dad is the youngest son and my aunt is the baby.

There is 2 years age difference between these two children...my aunt very quickly corrected my daddy just recently when he said 3.  For this photo to be in 1940, Daddy would be 7 as he was born in 1933 But Ieva would be 5 not an infant.

I think the photo is more likely taken about 1936...making Janis Ivars (my Dad between 3 and 4) and Ieva less than a year old. Mirdza and Gunars the older children I'm not sure of the age difference