Google My Business is able to obtain data from Facebook to display in the Google search local panels and Google Maps. Here is an example of a plumber listing from Tom Waddington that displays the name of the owner and the source of the information says Facebook.com.
Here’s A Screenshot:
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Services recently began appearing on the overview tab of a listing on mobile sometimes. Also, owner or CEO and other info may appear from various sources. On this one, the reference is a facebook post from the biz that mentions the owner. pic.twitter.com/NjVZVMAI75
— Tom Waddington (@tomwaddington8) June 12, 2020
Facebook will love to see that Google is obtaining this data from them.