These are the astrological events that coincided with Einstein’s relationship development (his career development was discussed in here.)
1896: Einstein enrolled in mathematics program of ETH Zurich. There he met his future wife Mileva Maric; Solar Arc Venus = Sun/Moon during 1896.
1903: he married Mileva on January 1903 – SA Sun = Venus was exact.
1914: SA Neptune = MC – Einstein separated from his wife, who took the children with her. He moved on to Berlin to teach there. Must have been a lonely time (“ego wipeout” of Neptune-MC contact).
1919: He divorced his wife after five years of separation (Feb 1919). SA Pluto=Saturn ruling 7th; also, Tr Pluto was exactly conjunct Saturn. He married Elsa Lowenthal in June of the same year. Pluto – Saturn contact often suggests a threat of loss in any area of life (in this case, loss in the 7th house area of marriage was strongly suggested through the Solar Arc and transit picture), and for Einstein the old relationship was destroyed in order to make new marriage possible.