Mark is one of those persons who is associated with what is now "basic functionality". He is still working in the field of Unicode and language support and is therefore one of the movers and shakers in the computer industry.
When you search for Mark Davis, he is one of 28 items that show up. They are many people, a house, two computer games and a movie made by a Mark Davis. These 28 items represent the combined knowledge of Wikipedia, Wikisource and Wikivoyage.
When you hover over any of the items in the list, you will get a box with pertinent information. When available, a picture shows up. I asked Mark if I could use a picture of him to be used in Wikidata and Wikipedia. I could and have the chat log to prove it.
When I told Mark that Wikidata is harvested, among others, by DBpedia, he realised that the picture used will have an impact on the semantic web. He was impressed and, is now considering if he has an even better picture to share.