Any yaoi were the uke is the seme's father lover

http://www.mangago.me/read-manga/itsuwari_no_daishou/
This is the only one I can think of at the moment, but I know there are others.

http://www.mangago.me/read-manga/not_equal/

http://www.mangago.me/read-manga/homura_uzuki_jun/
http://www.mangago.me/read-manga/oni_ni_hatsujou/. Uke wasn't the lover but was in love with the father.
http://www.mangago.me/read-manga/paraphrase/. 3rd story I think.

http://www.mangago.me/read-manga/tooi_nemuri/. Maybe?
http://www.mangago.me/read-manga/tour_shangri_la/
http://www.mangago.me/read-manga/koi_no_ori_mitsu_no_kusari/ except maybe father was the Uke (I haven't read this one yet)
http://www.mangago.me/read-manga/hard_core_heart/. Actually father, son, and friend 3p.

Hopefully someone may find more for you.

Thank you