The phrase "a close relation to" is correct and usable in written English.
It can be used when discussing the connection or association between two subjects, ideas, or entities.
Example: "There is a close relation to the findings of this study and previous research on the same topic."
Alternatives: "a strong connection to" or "a significant link to".
He is a close relation to Hard Top so there is no reason why he won't stay further.
The idea, of course, is a close relation to the local-food movement whose influence is omnipresent in the region.
A close relation to London's Engineer, this is one of the newer ventures in Rye, bringing a blast of modern seaside chic to the cinque port.
"In almost all cases where the child is the victim, it is someone who has a close relation to the child who is the perpetrator".
And Stelios may not be impressed at seeing such a close relation to the "Let's fly" message that he devised for easyJet.
The nagauta form of lyric music, like most of the narrative forms, began with a close relation to the Kabuki popular theatre of the Tokugawa period.
But the demise of ESPN's TV channel in the UK means neither of my preferred options - Canadian football, a closer relation to rugby league and another closely guarded secret surviving in the shadow of a neighbouring behemoth, nor the youthful exuberance and unpredictability of NCAA college football – are available.
There has been a tendency in the period since World War II to bring occupational injury schemes into a closer relation to other social security schemes.
Mr Shuttleworth refuses to reveal any details, beyond hinting that it will be a closer relation to the firm's core product than some of its rivals' mobile systems are to their desktop equivalents.
Phylogenetic analysis of the ferret globin genes indicated a closer relation to the human globins than to those of mouse.
For the submodel of symptomatic detection, TBA was used as a proxy for breast size, which has a closer relation to detection, through palpation, than BMI.
