ENGAGED. Patti Davis, 31, actress daughter of President and Mrs. Ronald Reagan; and Paul Grilley, 25, Los Angeles yoga instructor, whom she met two years ago while both were taking yoga classes; in Paris. A White House announcement, issued after Davis phoned to tell her parents, confirmed widespread rumors, reported that her mother was "very happy" and noted that the nuptials would probably take place before the end of the year.

MARRIED. Pete Rose, 43, record-racking baseball superstar, now playing left field for the Montreal Expos; and Carol Woliung, 29, a former model from Lawrenceburg, Ind.; both for the second time; in Cincinnati. Rose hoped to celebrate the occasion by getting his 4,000th career hit in his home town, against the Cincinnati Reds, but failed. On his next outing, the day before his birthday, he doubled against the Phillies in Montreal and became the second man, after Ty Cobb in 1927, to reach 4,000.

CONVICTED. Henry Lee Lucas, 47, confessed murderer, who last week increased his claimed total of victims between 1975 and 1983 to 360 across the U.S., saying that he had killed using " 'most every way but poison"; of the strangulation and attempted rape of one of those victims, an unidentified woman hitchhiker; in San Angelo, Texas. Lucas was sentenced to death, and is already under 75-year and life sentences for two other Texas murders and faces at least 18 indictments in five other states.

DIED. Christopher Wilder, 39, playboy race driver, suspected multiple kidnaper-rapist-murderer and object of a nationwide FBI man hunt who in the past two months left a blood-spattered trail of at least eleven new victims first in Florida and then as he fled to Nevada and back to the Northeast; after being shot twice, possibly with his own gun, during a struggle that occurred when two state policemen confronted him at a gas station; in Colebrook, N.H., ten miles from the Canadian border.

DIED. Pyotr Kapitsa, 89, Nobel-prizewinning Soviet physicist who made major discoveries in magnetism and low-temperature and plasma physics but who was placed under house arrest in the last years of the Stalin era for refusing to conduct nuclear weapons research; in Moscow. He spent much of his early career at England's Cambridge University, until Stalin in 1934 pressured him into staying home by creating Moscow's Institute of Physical Problems, which Kapitsa headed until 1946 and then from his post-Stalin rehabilitation in 1955 until his death.