My first, and still primary, fursona is Varek-Wolf. I've commissioned a fursuit for him, but don't expect it to be completed until next year.
In the meantime, I've acquired a partial fursuit, which I purchased at auction. This suit, a blue fox character named Dexter, didn't have a fursona until after I won the auction. Only after I started wearing him did his fursona really develop. I add a little more to his character each time I'm in suit. He's become a more outgoing, off-the-wall version of myself at a much younger age (mid-20s). So in this case the fursuit came first, then the fursona.
A few weeks ago I purchased a second partial fursuit on auction, a black wolf with a scarred face, a missing eye, and a notched ear. Again, there wasn't a fursona until I saw a picture of this wolf. Almost immediately his character concept developed: a wolf who's been through a rough time in life and is hoping to settle down and enjoy a quiet life for a change--only to find himself surrounded by all these other fur creatures who are determined to make his life less sedate and more interesting than he ever bargained. His fursona is something of a mirror of my own story over the past few years. He's reserved and less outgoing, but is slowly being drawn back into an active and fun life.
Neither of these fursonas would have existed if I had not acquired the fursuits. But once I got Dexter and began creating his personality, his fursona became a fully-realized character. I expect that the same will be true of the wolf fursuit.