If I had to think about it, I'd also say Olga. I'm a very moody person, very bookish, and definitely not what someone would describe as a 'classic beauty' the way they always compared her to Tatiana in appearance. I also have a younger sister, so I relate to her in terms of being an older sister. And while she looked out for her younger sisters, she wasn't as commanding of them behaving as Tatiana was, being the 'governess' and all, and I feel that while I look out for my younger sister, I prefer to have fun with her rather than discourage her in everything. That's how I feel as an adult though - Olga was nearly my age when the family was murdered, so at twenty-three, I feel I relate more to Olga. However at say eleven, when I first became interested in the Romanovs, I'd have said I related more to Anastasia - I was a rowdy child, and I could be very improper and impolite, and I loved to joke around or make people laugh. I was less interested in my studies at the time, as Anastasia and Maria are often described as being, and more interested in everything else going on around me in life. However at this time in my life, and when I look back, probably my teenage years as well, I best relate to Olga for sure.