One was his own wife! He owed much of what he had today to her! Back then, he had merely been an adventurer. If his wife had not insisted on marrying him, his father-in-law would never have truly agreed to give his daughter to him.
Don't talk about his father-in-law recognizing talent with a discerning eye. No matter what, he had only been an adventurer at the time. What right did he have to receive the full support of a great noble? Just because he had saved the man's daughter, the man had to marry that daughter off to him?
Give him a break! Couldn't money express gratitude just as well? Was there really any need to marry off a daughter?
As for his father-in-law's later support, that had also been because of his wife. It could be said that by marrying his current wife, Marco had saved himself twenty years of struggle! Unfortunately, while his wife was practically obedient to Marco's every word, she absolutely could not tolerate him having affairs with other women.
In fact, if Marco himself had not felt anything for the female elf Saya, his wife would never have been so at ease letting Saya remain by his side.
Was Marco grateful to his wife? Of course he was, but gratitude did not mean love. He had married her back then more out of practical considerations. So, after confirming that he had fallen in love with Isabella, Marco's first reaction was not guilt toward his wife, but to consider what impact this would have on his career.
The second person was Solam.
After realizing that he had fallen in love with Isabella, Marco immediately had his men begin gathering information on her. When he discovered that Isabella was actually Solam's maid, he could barely restrain