In china,Matheson,we sound it "ma sen".So,if you would find a Chinese name sounds like it,i suggest you can choice "马森"--ma sen or”麦森“--mai sen.They sounds very similarly.
In china,"马 " is surname,big numbers of people use it for surname. "麦" is a surname too,but not very popular.
And the given name in china,you can choice 2 of this,"森" --sen ,and "僧"---seng.
”森“means "forest",also a lot of wood."僧" means "monk",but it seems "mountain and flowing water ,a monk live here,an especial name,an especial charm" ..