Hmm there's a lot!!
If you want stories with abit more plot and more built up of love, you can try works like http://www.mangago.me/read-manga/gerard_to_jacques/ and other works by the same sensei
If you want those with dramatic storylines; http://www.mangago.me/read-manga/zion_no_koeda/
For a read with more angst and smut;
http://www.mangago.me/read-manga/midare_somenishi_dj_adesugata_emaki/
If you want a mix of both comedy, smut/drama;
http://www.mangago.me/read-manga/hagakure_no_koi/
Enjoy
http://www.mangago.me/read-manga/koushaku_no_himeta_kuchizuke/
http://www.mangago.me/read-manga/kizoku_no_aoi_kuchizuke/tr/47976/page/110/ sequel
http://www.mangago.me/read-manga/ousama_game_takagi_ryo/
http://www.mangago.me/read-manga/shitsuji_game/
http://www.mangago.me/read-manga/black_knight/
http://www.mangago.me/read-manga/wild_rock/
Can anyone recommend me a historical yaoi manga?