I hope there is a debate going on somewhere in the OSM community about how best to tag buildings associated with people whose name was subsequently adopted by a progressive blues-rock group featuring a flute. Unfortunately I didn't record the precise location of this building, so I'm in no position to contribute.
To my generation Jethro Tull are a British group, best known for "Living in the Past", "Aqualung", and Ian Anderson standing on one foot while playing the flute with his hair in disarray. This is not the cottage in Crowmarsh Gifford, where members of the group have lived since 1967.
Jethro Tull (1674 – 1741) was an English agricultural pioneer. He improved the seed drill ( a device for sowing seeds), while living in this cottage between 1700 and 1710.