RICHMOND (AP) — Four Vir ginia union University students clambered aboard —southbound buses here last night and headed on divergent ‘freedom ride”’ routes toward Jackson, Miss. J . Charles Sherrod, the Negro min isterial student who led last year’s sit-ins here, left on a Trail ways bus at 7:36 p.m. (EDT). He said he was bound for Atlanta first — and then to Jackson. To so, it was likely he would cross Alabama, where a federal judge has enjoined the “freedom riders to call off their protest for the time being. Three other riders boarded a bus about Li p. m. (EDT) for Nashville,Tenn., where, they said, they will be organized into a group headed for Jackson to test segregated facilities. They did not intend to go into Alabama, they said. . A fifth would-be rider from Richmond did not show up. The other three ‘‘freedom riders” were identified’ as Regi nald M. Green of Washington, Obediah Sims of Pittsburgh and, Raymond Randolph of New York City. Sherrod is of Petersburg. Three other Negro students from the university here accom panied Sherrod to the bus termi nal but quietly stood their ground outside the bus as he climbed aboard. No crowd gathered at the termi nal and, there was no untoward incident, though an FBI man was spotted on the scene and a Trail ways spokesman said a repre sentative of the Justice Depart ment also was present. The bus company, apparently counting on a number of'Free dom Riders,” brought an empty bus to the terminal for their ex clusive use. But when only Sher rod turned out to have a tickets plans for a special run were abandoned and he was placed aboard the crowded ‘“hrangh’ bus south. Sherrod has completed his min isterial course at Virginia Union but did not receive his degree at commencement exercises yester day. College officials said he failed to gain sufficient credits because he spent 30 days in jail at Rock Mil, S. C., last February for his part in a sit-in demonstration. Sherrod originally announced plans for a “Freedom Ride” from Richmond to Jackson last Thurs day. Then the ride was postponed until Saturday, and finally until last night. ~