Mr Suggate (28) and Mrs Suggate, nee Fisher (25), met at an evening psychology laboratory in 2003, early in the second year of their university studies.
The next year they were engaged and later married.
Yesterday was their fifth wedding anniversary, and today they gain their third and fourth degrees from the university, graduating with respectively, a PhD and an MSc in psychology.
They will be among more than 470 graduands graduating from the university, mainly with degrees in commerce, consumer and applied sciences, and sciences.
Early in 2003, Mr Suggate soon noticed a young woman in his evening psychology laboratory class who seemed more mature than her peers.
"I just thought she was gentle and intelligent and had similar interests to myself," he said.
And she also soon began to find him rather interesting.
At one point she heard him speaking French, a language she had studied at secondary school, and realised he shared her interest not only in psychology but also in languages.
In 2005, they both completed honours degrees in psychology, he with a BA (Hons.) and she with a BSc (Hons.), but both graduated in absentia.
As their postgraduate studies continued, the first of their children, Sofia, arrived in 2007.
She is now aged 2 years, 7 months.
And a sister, Natalya, joined them earlier this year.
She is now 7 months.
Although the Suggates found themselves studying for different postgraduate degrees, their academic progress was often still well synchronised.
In April, they handed in their respective completed thesis work, within a day of each other.
Mr Suggate said that he and his wife had both gained much more from university than they had initially expected, including by pursuing later postgraduate research.
"To me I went in without a life and without direction and came out with quite a bit," he said.
His PhD research, which attracted positive comment from examiners, has focused on reading and age-related development.
The research showed that children who began reading about two years later than their peers had, in fact, caught up by age 10 to 11.
The Suggate family's life will change direction again when they leave Dunedin this month so Mr Suggate can pursue his research into early literacy and language at the University of Wuerzburg in Germany.
His study is supported by a prestigious two-year postdoctoral research fellowship from the Alexander von Humboldt Foundation in Germany.
Today, the couple is looking forward to graduating from Otago University in what Mrs Suggate terms "a lovely family occasion".
"We spent so much time studying together and living together and it really feels a nice way to end up.
"Sebastian's help has been invaluable.
"Without him, I don't think I would have found the motivation to complete my masters."
Adding to their pleasure, Tamara's mother, Carole Fisher, will be graduating with them, gaining a postgraduate diploma in public health.
