Tatiana Konstantinovna was, however, 21 when she married in 1911, so quite a bit older than Olga was in 1914. Irina was only a few months older than Olga, but, unlike Olga (but like Tatiana K), she had found a man she wanted to marry.
In 1914 Olga was old enough to marry, but, first, she had to find someone suitable. Suitable had two elements:
1) Status, age, religion and character sufficient for Olga's parents to approve:
2) Olga needed to be in love with him
It didn't happen.