"Suntommy" might be a garbled form of "SuntoMMy" (perhaps a username, a font name, or an old encoding name) being converted to Unicode. Could also be a misspelling of "Sun Microsystems" encoding (e.g., Sun signed/unsigned UTF-8 or Sun-specific charsets) to Unicode.
The conversion of Suton Tommy to Unicode poses several challenges: suntommy to unicode