Simplify the following text for a Grade 7 native English-speaking person.
Original: They are named after Sir Hugh Munro ( 1856 -- 1919 ) , who produced the first attempt at a catalogue of such hills , known as Munro 's Tables , in 1891 .
Simplified: A Munro is a mountain in Scotland with a height over 3000 f. They are named after Sir Hugh Munro , 4th Baronet ( 1856 -- 1919 ) , who produced the first list of such hills , known as Munros Tables , in 1891 .