Greetings!
It is true there are not many good, free English RPG's. However during the mid-90's (when the SNES / SFC had its "golden age") American RPG's were mostly on the PC. They were quite different from jRPG's. They built the foundation for the "American RPG" which is popular to this day. Very often people in America decide to prefer "American" or "Japanese" RPG's -- I myself am a fan of both -- however I have been disappointed with most recent RPG's on both shores. In any case, most of these RPG's are available for download from English Abandonware sites, and you might try them. However the graphics are old and combat is very simple, so it may not be enjoyable today. Get some graph paper, as you will need it.
Just click the "RPG" link at the top and there are 70 or so games. I am unsure about the quality of all of them, but any game made by "SSI" is a part of the "Gold Box Series" which is what I am talking about. Many games by "Interplay" are also good.
One final note, most modern PC's will run these programs far too fast to ever hope to know what is going on. So you will need a free utility called MoSlo:
http://www.hpaa.com/moslo/basic.asp
The easiest way to run the program would be to do a Start | Run command (unsure how to say in Japanese) and type in "c:\moslo\moslo.com /5 c:\windows\command". (The yen symbols are supposed to be backslashes). This will open a command prompt where your CPU is reduced to 5% of its normal speed. If you find that to be too slow or fast, you can change the number after the / to whatever % you want. After the command prompt opens, change directories to wherever you have unzipped the game, and type the command to execute it.
Enjoy, and if you have any questions, I will check this board.