But as a matter of fact, when he came down to Cambridge in--?
1892--to deliver a course of Vacation lectures on embryology, he was already two years married to Linda Bennet, an heiress, the daughter and niece (her parents died when she was young and she lived with an uncle and aunt) of very rich manufacturers at Leeds.
So, though his eye, quick to discern beauty, and his brain tentacles ready to detect intelligence combined with a lovely nature, soon singled out Honoria Fraser, amongst a host of less attractive girl-graduates, he had no more thought of falling in love with her than with a princess of the blood-royal.

He might, long since, within a month of his marriage have found out his Linda to be a pretty little simpleton with a brain incapable of taking in any more than it had learnt at a Scarborough finishing school; but he was too instinctive a gentleman to indulge in any flirtation, any deviation whatever from mental or physical monogamy.

For he remembered always that it was his wife's money which had enabled him to pursue his great researches without the heart-breaking delays, limitations and insufficiencies involved in Government or Royal Society grants; and that Linda had not only endowed him with all her worldly goods--all but those he had insisted in putting into settlement--but that she had given him all her heart and confidence as well.
Still, he liked Honoria.

She was eager to learn much else beyond the hard-grained muses of the square and cube; she was the daughter of a prosperous and boldly experimental physician, whose wife was a champion of women's rights.

So he pressed Honoria to come with her mother and make the acquaintance of himself and Linda in Portland Place.
Why was Michael Rossiter wedded to Linda Bennet when he was no more than twenty-five, and she just past her coming of age?
Because fresh from Edinburgh and Cambridge and with a reputation for unusual intuition in Biology and Chemistry he had come to be Science master at a great College in the North, and thus meeting Linda at the Philosophical Institute of Leeds had caused her to fall in love with him whilst he lectured on the Cainozoic fauna of Yorkshire.